• 检测圆锥管螺纹基面中方法很多,但测量过程复杂。

    There are many ways to measure base-level pitch diameter of cone-shaped thread.

    youdao

  • 检测圆锥管螺纹基面中方法很多,但测量过程复杂。

    There are many ways to measure base-level pitch diameter of cone-shaped thread.

    youdao

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