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.

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。

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Next to it a boy leaned against the railings, his rod and line dangling out over the floating garbage and the stream of brown, stinking waste which trickled from a pipe in the wall below.

在它旁边有一个男孩依靠在围栏上，他的鱼竿和线悬荡在漂浮的垃圾和那股从下面墙上的管子里流淌出的褐色的、臭烘烘的污水上面。

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At one point, one man, not Inupiat, posed beside the whale holding a small fishing rod, pretending for a camera that he had caught it on eight-pound line.

在某一处，一个男人，不是一位爱斯基摩人，在鲸旁边握着钓竿摆了个POSE，他抓着一台相机伪装在8英磅的线上。

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