2886| 6
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用鋼加工壁厚2.27mm的圓筒,,高70 ,,內(nèi)外表面的公差都是5S ,這個(gè)很難嗎,? |
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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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