GET https://dev.normadoc.fr/products/ieee-260-4-2018-ieee00006865-243640

Response
200 OK
IP
216.73.216.20
Profiled on
Token
2a8256

Forms

  • sylius_add_to_cart
    • cartItem
    • _token

sylius_add_to_cart

Form type: 
"Sylius\Bundle\CoreBundle\Form\Type\Order\AddToCartType"

Errors

This form has no errors.

Default Data

Property Value
Model Format same as normalized format
Normalized Format 
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113823
  -cart: App\Entity\Order\Order {#13373 …}
  -cartItem: App\Entity\Order\OrderItem {#113811
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113835 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113836 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 7367
      #code: "IEEE00006865PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 11988
        #code: "IEEE00006865"
        #attributes: Doctrine\ORM\PersistentCollection {#7700 …}
        #variants: Doctrine\ORM\PersistentCollection {#7743 …}
        #options: Doctrine\ORM\PersistentCollection {#7915
          #collection: Doctrine\Common\Collections\ArrayCollection {#7917 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7310}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#261809 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751040122 {#7274
          date: 2025-06-27 18:02:02.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1753970307 {#7322
          date: 2025-07-31 15:58:27.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7921 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7920
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7310}
            #id: 42961
            #name: "IEEE 260.4:2018"
            #slug: "ieee-260-4-2018-ieee00006865-243640"
            #description: """
              Revision Standard - Active.<br />\n
              Tables of letter symbols and abbreviations for quantities in the science and technology of acoustics are contained in this standard. Recommendations for their use are also provided. Specialties within acoustics that make use of the letter symbols and abbreviations within this standard include, but are not limited to: speech, hearing, music, noise control, vibration, shock, sonar, and transducers. Although remarks and limited short-form information are provided for many of the symbols and abbreviations contained in this standard, definitions and methods of calculating the various quantities are outside the scope of this standard.<br />\n
              \t\t\t\t<br />\n
              This standard provides a set of letter symbols for quantities and abbreviations and recommendations for their use in the science and technology of acoustics. The science and technology of acoustics includes sound, ultrasound, and infrasound in all media. Gases, especially air; liquids, especially water; and solids are examples of media with which acoustics is concerned. Specialties within acoustics that make use of the letter symbols and abbreviations within this standard include, but are not limited to: speech, hearing, music, noise control, vibration, shock, sonar, and transducers. Although remarks and limited short-form information are provided for many of the symbols and abbreviations contained herein, definitions and methods of calculating the various quantities are outside the scope of this standard.<br />\n
              The purpose of this standard is to clarify the technical literature of acoustics by providing a standard set of letter symbols for use in mathematical formulations and a standard set of abbreviations for use in text, especially in tabulations and on graphs. This standard also encourages the treatment of levels according to the standard rules for all quantities and units and clarifies the basic differences among quantity symbols, unit symbols, and abbreviations.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Standard for Letter Symbols and Abbreviations for Quantities Used in Acoustics"
            -notes: "Active"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
        #channels: Doctrine\ORM\PersistentCollection {#7627 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7644 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7325 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7389 …}
        -apiLastModifiedAt: DateTime @1743289200 {#7317
          date: 2025-03-30 00:00:00.0 Europe/Paris (+01:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @1551308400 {#7318
          date: 2019-02-28 00:00:00.0 Europe/Paris (+01:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "260.4"
        -bookCollection: ""
        -pageCount: 71
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041320 {#7283
        date: 2025-06-27 18:22:00.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1756908201 {#8120
        date: 2025-09-03 16:03:21.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93380
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8103}
          #id: 7397
          #name: null
          -shortDescription: null
          -description: null
          -notes: null
          -shippingInformation: "Instant download"
        }
      ]
      #currentLocale: "en_US"
      #currentTranslation: null
      #fallbackLocale: "en_US"
      #version: 10
      #onHold: 0
      #onHand: 0
      #tracked: false
      #weight: 0.0
      #width: null
      #height: null
      #depth: null
      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8135 …}
      #shippingCategory: null
      #channelPricings: Doctrine\ORM\PersistentCollection {#8297 …}
      #shippingRequired: true
      #images: Doctrine\ORM\PersistentCollection {#8294 …}
      -apiLastModifiedAt: DateTime @1756850400 {#8102
        date: 2025-09-03 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-1-5044-5310-3"
      -ean: "9781504453103"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/ak9B4r"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8131 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8123 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
View Format same as normalized format

Submitted Data

This form was not submitted.

Passed Options

Option Passed Value Resolved Value
data 
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113823
  -cart: App\Entity\Order\Order {#13373 …}
  -cartItem: App\Entity\Order\OrderItem {#113811
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113835 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113836 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 7367
      #code: "IEEE00006865PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 11988
        #code: "IEEE00006865"
        #attributes: Doctrine\ORM\PersistentCollection {#7700 …}
        #variants: Doctrine\ORM\PersistentCollection {#7743 …}
        #options: Doctrine\ORM\PersistentCollection {#7915
          #collection: Doctrine\Common\Collections\ArrayCollection {#7917 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7310}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#261809 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751040122 {#7274
          date: 2025-06-27 18:02:02.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1753970307 {#7322
          date: 2025-07-31 15:58:27.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7921 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7920
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7310}
            #id: 42961
            #name: "IEEE 260.4:2018"
            #slug: "ieee-260-4-2018-ieee00006865-243640"
            #description: """
              Revision Standard - Active.<br />\n
              Tables of letter symbols and abbreviations for quantities in the science and technology of acoustics are contained in this standard. Recommendations for their use are also provided. Specialties within acoustics that make use of the letter symbols and abbreviations within this standard include, but are not limited to: speech, hearing, music, noise control, vibration, shock, sonar, and transducers. Although remarks and limited short-form information are provided for many of the symbols and abbreviations contained in this standard, definitions and methods of calculating the various quantities are outside the scope of this standard.<br />\n
              \t\t\t\t<br />\n
              This standard provides a set of letter symbols for quantities and abbreviations and recommendations for their use in the science and technology of acoustics. The science and technology of acoustics includes sound, ultrasound, and infrasound in all media. Gases, especially air; liquids, especially water; and solids are examples of media with which acoustics is concerned. Specialties within acoustics that make use of the letter symbols and abbreviations within this standard include, but are not limited to: speech, hearing, music, noise control, vibration, shock, sonar, and transducers. Although remarks and limited short-form information are provided for many of the symbols and abbreviations contained herein, definitions and methods of calculating the various quantities are outside the scope of this standard.<br />\n
              The purpose of this standard is to clarify the technical literature of acoustics by providing a standard set of letter symbols for use in mathematical formulations and a standard set of abbreviations for use in text, especially in tabulations and on graphs. This standard also encourages the treatment of levels according to the standard rules for all quantities and units and clarifies the basic differences among quantity symbols, unit symbols, and abbreviations.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Standard for Letter Symbols and Abbreviations for Quantities Used in Acoustics"
            -notes: "Active"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
        #channels: Doctrine\ORM\PersistentCollection {#7627 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7644 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7325 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7389 …}
        -apiLastModifiedAt: DateTime @1743289200 {#7317
          date: 2025-03-30 00:00:00.0 Europe/Paris (+01:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @1551308400 {#7318
          date: 2019-02-28 00:00:00.0 Europe/Paris (+01:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "260.4"
        -bookCollection: ""
        -pageCount: 71
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041320 {#7283
        date: 2025-06-27 18:22:00.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1756908201 {#8120
        date: 2025-09-03 16:03:21.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93380
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8103}
          #id: 7397
          #name: null
          -shortDescription: null
          -description: null
          -notes: null
          -shippingInformation: "Instant download"
        }
      ]
      #currentLocale: "en_US"
      #currentTranslation: null
      #fallbackLocale: "en_US"
      #version: 10
      #onHold: 0
      #onHand: 0
      #tracked: false
      #weight: 0.0
      #width: null
      #height: null
      #depth: null
      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8135 …}
      #shippingCategory: null
      #channelPricings: Doctrine\ORM\PersistentCollection {#8297 …}
      #shippingRequired: true
      #images: Doctrine\ORM\PersistentCollection {#8294 …}
      -apiLastModifiedAt: DateTime @1756850400 {#8102
        date: 2025-09-03 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-1-5044-5310-3"
      -ean: "9781504453103"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/ak9B4r"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8131 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8123 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
 same as passed value
product 
App\Entity\Product\Product {#7310
  #id: 11988
  #code: "IEEE00006865"
  #attributes: Doctrine\ORM\PersistentCollection {#7700 …}
  #variants: Doctrine\ORM\PersistentCollection {#7743 …}
  #options: Doctrine\ORM\PersistentCollection {#7915
    #collection: Doctrine\Common\Collections\ArrayCollection {#7917 …}
    #initialized: true
    -snapshot: [ …4]
    -owner: App\Entity\Product\Product {#7310}
    -association: [ …21]
    -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
    -backRefFieldName: null
    -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#261809 …}
    -isDirty: false
  }
  #associations: Doctrine\ORM\PersistentCollection {#7899 …}
  #createdAt: DateTime @1751040122 {#7274
    date: 2025-06-27 18:02:02.0 Europe/Paris (+02:00)
  }
  #updatedAt: DateTime @1753970307 {#7322
    date: 2025-07-31 15:58:27.0 Europe/Paris (+02:00)
  }
  #enabled: true
  #translations: Doctrine\ORM\PersistentCollection {#7921 …}
  #translationsCache: [
    "en_US" => App\Entity\Product\ProductTranslation {#7920
      #locale: "en_US"
      #translatable: App\Entity\Product\Product {#7310}
      #id: 42961
      #name: "IEEE 260.4:2018"
      #slug: "ieee-260-4-2018-ieee00006865-243640"
      #description: """
        Revision Standard - Active.<br />\n
        Tables of letter symbols and abbreviations for quantities in the science and technology of acoustics are contained in this standard. Recommendations for their use are also provided. Specialties within acoustics that make use of the letter symbols and abbreviations within this standard include, but are not limited to: speech, hearing, music, noise control, vibration, shock, sonar, and transducers. Although remarks and limited short-form information are provided for many of the symbols and abbreviations contained in this standard, definitions and methods of calculating the various quantities are outside the scope of this standard.<br />\n
        \t\t\t\t<br />\n
        This standard provides a set of letter symbols for quantities and abbreviations and recommendations for their use in the science and technology of acoustics. The science and technology of acoustics includes sound, ultrasound, and infrasound in all media. Gases, especially air; liquids, especially water; and solids are examples of media with which acoustics is concerned. Specialties within acoustics that make use of the letter symbols and abbreviations within this standard include, but are not limited to: speech, hearing, music, noise control, vibration, shock, sonar, and transducers. Although remarks and limited short-form information are provided for many of the symbols and abbreviations contained herein, definitions and methods of calculating the various quantities are outside the scope of this standard.<br />\n
        The purpose of this standard is to clarify the technical literature of acoustics by providing a standard set of letter symbols for use in mathematical formulations and a standard set of abbreviations for use in text, especially in tabulations and on graphs. This standard also encourages the treatment of levels according to the standard rules for all quantities and units and clarifies the basic differences among quantity symbols, unit symbols, and abbreviations.
        """
      #metaKeywords: null
      #metaDescription: null
      #shortDescription: "IEEE Standard for Letter Symbols and Abbreviations for Quantities Used in Acoustics"
      -notes: "Active"
    }
  ]
  #currentLocale: "en_US"
  #currentTranslation: null
  #fallbackLocale: "en_US"
  #variantSelectionMethod: "match"
  #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
  #channels: Doctrine\ORM\PersistentCollection {#7627 …}
  #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
  #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
  #averageRating: 0.0
  #images: Doctrine\ORM\PersistentCollection {#7644 …}
  -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7325 …}
  -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7389 …}
  -apiLastModifiedAt: DateTime @1743289200 {#7317
    date: 2025-03-30 00:00:00.0 Europe/Paris (+01:00)
  }
  -lastUpdatedAt: DateTime @1578006000 {#7292
    date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
  }
  -author: ""
  -publishedAt: DateTime @1551308400 {#7318
    date: 2019-02-28 00:00:00.0 Europe/Paris (+01:00)
  }
  -releasedAt: null
  -confirmedAt: null
  -canceledAt: null
  -edition: null
  -coreDocument: "260.4"
  -bookCollection: ""
  -pageCount: 71
  -documents: Doctrine\ORM\PersistentCollection {#7464 …}
  -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
}
 same as passed value

Resolved Options

Option Value
action 
""
allow_extra_fields 
false
allow_file_upload 
false
attr 
[]
attr_translation_parameters 
[]
auto_initialize 
true
block_name 
null
block_prefix 
null
by_reference 
true
compound 
true
constraints 
[]
csrf_field_name 
"_token"
csrf_message 
"The CSRF token is invalid. Please try to resubmit the form."
csrf_protection 
true
csrf_token_id 
null
csrf_token_manager 
Symfony\Component\Security\Csrf\CsrfTokenManager {#113843
  -generator: Symfony\Component\Security\Csrf\TokenGenerator\UriSafeTokenGenerator {#113844 …}
  -storage: Symfony\Component\Security\Csrf\TokenStorage\SessionTokenStorage {#113845 …}
  -namespace: Closure() {#113847 …}
}
data 
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113823
  -cart: App\Entity\Order\Order {#13373 …}
  -cartItem: App\Entity\Order\OrderItem {#113811
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113835 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113836 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 7367
      #code: "IEEE00006865PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 11988
        #code: "IEEE00006865"
        #attributes: Doctrine\ORM\PersistentCollection {#7700 …}
        #variants: Doctrine\ORM\PersistentCollection {#7743 …}
        #options: Doctrine\ORM\PersistentCollection {#7915
          #collection: Doctrine\Common\Collections\ArrayCollection {#7917 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7310}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#261809 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751040122 {#7274
          date: 2025-06-27 18:02:02.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1753970307 {#7322
          date: 2025-07-31 15:58:27.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7921 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7920
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7310}
            #id: 42961
            #name: "IEEE 260.4:2018"
            #slug: "ieee-260-4-2018-ieee00006865-243640"
            #description: """
              Revision Standard - Active.<br />\n
              Tables of letter symbols and abbreviations for quantities in the science and technology of acoustics are contained in this standard. Recommendations for their use are also provided. Specialties within acoustics that make use of the letter symbols and abbreviations within this standard include, but are not limited to: speech, hearing, music, noise control, vibration, shock, sonar, and transducers. Although remarks and limited short-form information are provided for many of the symbols and abbreviations contained in this standard, definitions and methods of calculating the various quantities are outside the scope of this standard.<br />\n
              \t\t\t\t<br />\n
              This standard provides a set of letter symbols for quantities and abbreviations and recommendations for their use in the science and technology of acoustics. The science and technology of acoustics includes sound, ultrasound, and infrasound in all media. Gases, especially air; liquids, especially water; and solids are examples of media with which acoustics is concerned. Specialties within acoustics that make use of the letter symbols and abbreviations within this standard include, but are not limited to: speech, hearing, music, noise control, vibration, shock, sonar, and transducers. Although remarks and limited short-form information are provided for many of the symbols and abbreviations contained herein, definitions and methods of calculating the various quantities are outside the scope of this standard.<br />\n
              The purpose of this standard is to clarify the technical literature of acoustics by providing a standard set of letter symbols for use in mathematical formulations and a standard set of abbreviations for use in text, especially in tabulations and on graphs. This standard also encourages the treatment of levels according to the standard rules for all quantities and units and clarifies the basic differences among quantity symbols, unit symbols, and abbreviations.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Standard for Letter Symbols and Abbreviations for Quantities Used in Acoustics"
            -notes: "Active"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
        #channels: Doctrine\ORM\PersistentCollection {#7627 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7644 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7325 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7389 …}
        -apiLastModifiedAt: DateTime @1743289200 {#7317
          date: 2025-03-30 00:00:00.0 Europe/Paris (+01:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @1551308400 {#7318
          date: 2019-02-28 00:00:00.0 Europe/Paris (+01:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "260.4"
        -bookCollection: ""
        -pageCount: 71
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
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upload_max_size_message 
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Symfony\Component\Form\FormErrorIterator {#113897
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Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113823
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