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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,,在車床上轉(zhuǎn)速有多少,?中心架要移幾次,?
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評(píng)分
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點(diǎn)評(píng)
人工太累,。沒(méi)人愿意干。
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