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[国外标准] ASTM B 549-04 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, AluminumClad Steel Reinforced

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P:2010-09-15 14:07:14

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ASTM B 549-04 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, AluminumClad Steel Reinforced.pdf

ASTM B 549-04 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, AluminumClad Steel Reinforced.pdf

BET - Brunauer-Emmett-Teller method[procedure]布鲁瑙尔-埃梅特-泰勒法[程序]<测定表面积的一种实用方法> （0） 投诉

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