parallel screw thread的意思|示意
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圆柱螺纹，圆柱管螺纹
parallel screw thread的网络常见释义
圆柱螺纹 ... 螺纹screw thread 圆柱螺纹 parallel screw thread 圆锥螺纹 taper screw thread ...
parallel screw thread相关短语
1、 Parallel screw thread gauges 平行螺纹量规