2209| 17
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懸空軸的支撐 |
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點(diǎn)評(píng)
平床身的車床才用這樣的,斜床身的都沒(méi)有,,萬(wàn)能外圓磨床也有,,還有跟刀架
改動(dòng)下,申請(qǐng)個(gè)專利,,年底評(píng)級(jí)用呀
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