5457| 12
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陶瓷球轴承失效问题请教 |
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点评
内外圈相对移动了,是不是因为内外圈没有定位?
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小黑屋|手机版|Archiver|机械必威体育网址 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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