4105| 2
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怎樣才能使軸承外圈外徑硬度不超過最高210HB |
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回復(fù) 1# 的帖子
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小黑屋|手機(jī)版|Archiver|機(jī)械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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