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[其它機(jī)型] 工業(yè)縫紉機(jī)為什么上軸轉(zhuǎn)一圈下軸轉(zhuǎn)兩圈呢? |
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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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