4897| 10
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如何保持方管平直? |
點評
同意此觀點,下料前可以先看一下方管是否平直?找出原因,對癥下藥。
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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