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male thread , outside thread
External thread: Threads on an external surface.
外螺纹在外表面上形成的螺纹。
youdao
The root of the external thread or the crest of the inner thread .
大径指过外螺纹牙顶或内螺纹牙底的圆柱面直径。
The new structure of a taper pin connection with external thread is introduced.
介绍了一种外端带有螺纹的圆锥销联接的新型结构。
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