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[維修方法] 送布牙的循環(huán)動作行程是怎樣進(jìn)行循環(huán)動作的?(機(jī)械原理篇) |
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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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