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GB/T 15242.2-1994 液压缸活塞和活塞杆动密封装置用支承环尺寸系列和公差 |
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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 2008-11-4 21:53:47
