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[繃縫機(jī)] 筒式繃縫機(jī)的前后護(hù)針凸輪與針的同步時(shí)間怎么樣為標(biāo)準(zhǔn)? |
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|小黑屋|手機(jī)論壇|Archiver|縫紉客,工業(yè)縫紉機(jī)維修問答
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