4759| 8
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关于NPT螺纹代替Z锥螺纹的标准文件是哪个 |
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点评
机械螺纹安卓版,各种螺纹参数
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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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