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發布時間: 2018-12-4 16:22
正文摘要:看淘寶賣的升降鋁型材,說是生產線升降用,里面的內孔尺寸42.5左右,配的型材尺寸是40X40啊,里面的縫隙怎么解決的,是做的什么件保持豎直么? ... |
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