nbjwbzj 发表于 2013-6-17 11:02:12

BS 84-2007 Parallel screw threads of Whitworth form - Requirements

BS 84：2007 Parallel screw threads of Whitworth form - Requirements
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admin 发表于 2013-6-17 11:27:56

谢谢您的分享，金币已奖励。

baozhudai 发表于 2015-5-13 10:55:05

好东西，学习了，为什吗雅正搞成这个样子啊 :):)
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