2735| 4
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求鑒定:哪里有生產(chǎn)這種齒條的? 量具上面的 |
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點(diǎn)評(píng)
的的確確是用曲面代替平面的,嘿嘿
請(qǐng)教大俠,螺紋是曲面,這個(gè)應(yīng)該還是平面吧,沒(méi)見(jiàn)過(guò),不知是否如此?
評(píng)分
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