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自己做的十字槽盘头、沉头、半沉头螺钉,精确切出螺纹和螺尾 |
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Archiver|手机版|小黑屋|机械社区 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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