...圆柱表面挖切螺旋凹槽称之外螺纹或阳螺纹 (external thread),相对在机件孔 面制作螺旋槽即称之内螺纹或阴螺纹(internal thread) A. 轴线(shaft line):螺纹中心线 B.
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internal thread broaching machine [机] 内螺纹拉床
internal thread grinding machine [机] 内螺纹磨床
CNC grinder for internal thread 数控内螺纹磨床
Taper pins with internal thread 内螺纹圆锥销
cylindrical pin with internal thread 内螺纹圆柱销
internal thread protector [油气] 内护丝
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