5坐標機床在85年後有的。4坐標機床在80年之後有的。單個葉片好加工整體葉輪不容易

來源: 佩尼燕京人penny 於 2021-07-09 21:48:53 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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