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外徑550,,內(nèi)徑512,,長(zhǎng)度5600卷管料,如何機(jī)加工保證內(nèi)外同心無(wú)偏重,? |
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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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