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1·The specific advantages, such as efficiency and the absence of drag torque, are maintained in this process, with costs remaining relatively Iow.

而干式离合器特有的优点，如高效率和无阻力矩将继续保持下去，同时成本仍可维持在相对低的水平。

2·As most of the power loads of the existing merchant ships are driven by the alternating current induction motors, it is necessary to study their drag torque mechanical characteristics.

现代民用船舶的大多数动力负载由交流异步电动机驱动，因此，对其负载阻力机械特性的研究很有必要。

3·Predicting and controlling the drag and torque in the process ofd rilling extended reach Wells is one of the key factors to ensure to be successful in the drilling.

大位移井钻井过程中摩阻扭矩的预测和控制是成功地钻成大位移井的关键因素之一。

4·RSDS will control well path accurately, reduce torque and drag remarkably and improve hole cleaning condition obviously. The drilling practices of ERD will be more reliable if RSDS is used.

用旋转导向系统RSDS进行大位移井钻井，可望相当准确的控制井眼轨迹，大幅度减少钻柱所受的摩阻和扭矩，显著改善井眼的清洁状况。

5·The compressed air powered wrench is capable of providing revert-torque to retrievable bolt end and sustain drag force.

该锚杆回收扳手由压气驱动，在给可回收锚杆的尾部提供反扭矩的同时，还可以承受拉力。

6·Torque and drag in extended-reach well greatly impact on the efficiency of drilling.

大位移井钻井的摩阻和扭矩严重影响钻井时效。