国外标准列表
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[国外标准] ASTM F1492-08 Standard Specification for Helmets Used in Skateboarding and Trick Roller Skating1
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[国外标准] ASTM F1473-07 Standard Test Method for Notch Tensile Test to Measure the Resistance to Slow Crack Gr
[国外标准] ASTM F1492-08 Standard Specification for Helmets Used in Skateboarding and Trick Roller Skating1
[国外标准] ASTM F1473-07 Standard Test Method for Notch Tensile Test to Measure the Resistance to Slow Crack Gr