1540| 7
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制、英制、美制螺紋的區別 |
點評
牙型角區別
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點評
G螺紋是直螺紋
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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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