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[釘扣機(jī)] 4-2問題,這臺(tái)機(jī)器的針桿左右擺動(dòng)的,動(dòng)力源在哪里? |
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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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