4548| 15
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請教:想用板牙在尼龍棒上手工攻出直徑12mm的螺桿,要用多粗的棒材? |
點評
加上車工的加工費就不如買成品尼龍螺桿了。
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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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