3418| 3
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48mm的活塞杆,静密封,选择内径48.5mm的O型密封圈还是47.5的啊? |
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Archiver|手机版|小黑屋|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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