4734| 7
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CW6140車床內(nèi)螺紋機加工,出刀口最后一扣螺紋有時寛與正常螺紋 |
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小黑屋|手機版|Archiver|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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