4694| 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? |
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Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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