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常用加工工藝精度 |
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點評
我哪看得懂,我農村來的,都是以丈為單 位,公分為誤差
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小黑屋|手機版|Archiver|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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