3248| 7
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Q235钢板攻丝发粘不断屑 |
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点评
试试挤压丝锥吧,但是对螺纹底孔的尺寸要求比较高
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小黑屋|手机版|Archiver|机械必威体育网址 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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