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[国外标准] ASTM D2720-94(R2006) 商业用各种洗净羊毛、毛条及短毛的商业公定重量和产量计算的标准实施规程
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[国外标准] ASTM D2421-02(R2007) C5和轻质烃类气体体积、液体体积或重量基准的分析互变现象用标准实施规程
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