• 发明摆动旋转接头接头螺纹接头锁紧螺帽两个球面构成

    The swinging rotating joint consists of spherical body, thread joint sleeve, locking screw nut, large copper washer and two spherical rings.

    youdao

  • 发明摆动旋转接头接头螺纹接头锁紧螺帽两个球面构成

    The swinging rotating joint consists of spherical body, thread joint sleeve, locking screw nut, large copper washer and two spherical rings.

    youdao

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