3876| 10
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哪位大俠車過直徑6.35+0.015的孔,淬過火,HRC48度 |
點評
整體合金棒用什么牌號的刀頭?
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點評
槍鉆,也只是個合金頭,硬度太高,沒辦法的!
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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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