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GB/T 20671.9-2006
非金属垫片材料分类体系及试验方法 第9部分: 软木垫片材料胶结物耐久性试验方法
Classification system and test methods for nonmetallic gasket materials - Part 9: Standard test method for binder durability of cork composition gasket materials
GB/T 4169.21-2006
Components of injection moulds for plastics - Part 21: Rectangular locating element
GB/T 19718-2005
Jewellery-Determination of nickel content-Method of flame atomic absorption spectrometry
GB/T 5922-2008
Motor vehicles and towed vehicles - Pressure test connection for compressed-air pneumatic braking equipment
GB/T 22716-2008
Test specifications of interturn insulation of armature winding for DC electrical machines