alldoing1 发表于 2018-5-17 12:59:51

ASTM B 8-2004 Standard Specification for Concentric-Lay-Stranded Copper Conducto

ASTM B 8-2004 Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft
硬、中硬或软同心绞合铜导线标准规范

admin 发表于 2018-5-17 16:58:58


谢谢您的分享，金币已奖励!
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