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M48(25.4/11=2.309)管子螺紋最理想的轉(zhuǎn)速多少? |
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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