This article presents a new tentative idea for the discharge of the pocketed oil in the hydraulic gear pump.

针对液压齿轮泵困油问题，提出卸荷方法的新设想。

youdao

First, the world's most deep-pocketed oil companies, the Western oil majors, are increasingly excluded from the most promising areas for exploration and development.

首先，世界多数财大气粗的油公司，尤其是西方的石油大鳄，不断被有希望勘探和开发出油田的地域排除在外。

youdao