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軸承中的鋼球如何制作的? |
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回復(fù) 2# 的帖子
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這是老工藝,現(xiàn)在的工藝也與之大同小異
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小黑屋|手機(jī)版|Archiver|機(jī)械社區(qū) ( 京ICP備10217105號(hào)-1,京ICP證050210號(hào),浙公網(wǎng)安備33038202004372號(hào) )
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