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3025| 1
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din103梯形螺纹Tr20X4螺纹大径尺寸应该是20-19.7mm 吗？ |
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小黑屋|手机版|Archiver|机械社区 ( 京ICP备10217105号-1，京ICP证050210号，浙公网安备33038202004372号 )
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发表于 2012-2-29 16:11:34
