用了超高强钢,取得同样碰撞结果,工程上是好的设计还是糟糕的设计?
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就是侥幸;
-soccer88-
♂
(558 bytes)
()
09/07/2017 postreply
00:15:55
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我的条件一开始就是清晰的,从来没有变过。
-TBz-
♂
(91 bytes)
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09/07/2017 postreply
15:11:43
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