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大直徑膠管下料有什么好方法,? |
點(diǎn)評(píng)
關(guān)鍵是效率,,6米長(zhǎng)直徑600的管子,在車(chē)床上轉(zhuǎn)速有多少?中心架要移幾次,?
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點(diǎn)評(píng)
人工太累。沒(méi)人愿意干,。
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