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1·The hand knob and the shell employ a screwed joint, which can reach the self-hold request of the device.

手柄与外壳采用螺纹连接，可以满足机构的自锁要求。

2·In chapter two, the prosperity of the motion, force and screwed joint of the surface dynamic rotating drilling downhole drilling string has been discussed.

第二章分析探讨了地面动力旋转钻井井下钻柱的运动状态、受力及螺纹联接的特性。

3·A protecting joint is added at power head rod joint in order to prevent power head rod joint abrasion when rod is screwed or unscrewed.

在拧卸钻杆时为了保护动力头钻杆接头，防止其磨损，通常的做法是在该接头处联接一个保护接头。

4·After the adhesive is solidified, the pipe and the pipe joint body are screwed into a whole through the screw plug.

待粘接剂固化后，管子、管接头体通过螺丝堵头凝接成一个整体。

5·The height and capacity of the screwed cup can be regulated by screw joint.

通过螺纹的联接来调整总杯子的高度和容量。