11111| 25
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加工完后,發現用螺紋通規一面擰比較松,另一面擰有點緊 |
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點評
貌似 書上都說這么說的。頂一下!
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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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