Chinese Standard: GB/T 23285-2009

Micrographics—Aperture cards—Method of measuring thickness of buildup area

IDT  ISO 6342:2003

全国文献影像技术标准化技术委员会(SAC/TC 86)

本标准规定了开窗卡（拍摄卡和拷贝卡）增厚区厚度的测量方法。
本标准适用于各类开窗卡增厚区厚度的测量。

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