仅由两个矢量组成的力偶叫作简单力偶。

A couple consisting of only two vectors is called a simple couple.

它们形成两力偶使杆弯曲。

They form two end couples to cause the bar to bend.

本文采用逆方法研究并获得了应力偶流体的定常和非定常精确解。

By using inverse method, the analytical solutions of couple stress fluids were obtained for steady and unsteady cases.