这样可以降低抽油杆的疲劳损坏，延长抽油杆的使用寿命。

Also it reduces suck rod fatigue failure to prolong working life.

youdao

如何降低螺杆泵抽油杆的应力水平，提高工作寿命是石油开采设备研究中一个急需解决的力学问题。

Working state of a screw pump rod-line is analyzed using Finite element analysis method during broken working station, and three kinds of possible mechanical models are set up.

youdao

如何降低螺杆泵抽油杆的应力水平，提高工作寿命是石油开采设备研究中一个急需解决的力学问题。

Working state of a screw pump rod-line is analyzed using Finite element analysis method during broken working station, and three kinds of possible mechanical models are set up.

youdao