alldoing1 发表于 2018-5-17 13:02:12

ASTM B 33-2004 Standard Specification for Tinned Soft or Annealed Copper Wire fo

ASTM B 33-2004 Standard Specification for Tinned Soft or Annealed Copper Wire for Electrical Purposes
电气用镀锡软或退火铜线标准规范

admin 发表于 2018-5-17 16:59:00


谢谢您的分享，金币已奖励!
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