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GB-T 3478.3-1995 圆柱直齿渐开线花键 37.5°压力角 尺寸表-PDF |
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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 2010-4-21 21:01:18