alldoing1 发表于 2018-5-18 00:08:15

ASTM B 232-2009 Standard Specification for Concentric-Lay-Stranded Aluminum Cond

ASTM B 232-2009 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR)

admin 发表于 2018-5-18 10:58:41

谢谢您的分享，金币已奖励!
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