The structure compositions of a new type of hydraulic driving pumping oil installation and the working principle of its hydraulic driving system are introduced.

介绍了新型液力抽油装置的组成及液压驱动系统的工作原理，该装置综合了液压有杆抽油装置和水力活塞泵抽油装置两方面的优点。

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The installation of the new cap on Friday July 16th could, in principle, stop any further oil or gas from leaking out of the top of the well.

原则上，7月16日周五，安装上新的井盖会阻止油井顶部的石油或天然气进一步漏出。

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We use oil of air filter, in the bath installation, commissioning and process in the use of special attention to make the following, to ensure that its use effect.

我们选用油浴式空气过滤器，在安装、调试和使用过程中特别注意作到以下几点，以保证其使用效果。

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In the past week there have been two attacks on oil workers near Angola's only onshore oil installation at Soyo, and one on the fringes of the capital, Luanda.

ECONOMIST: Angola: Battling, in the rain | The

It is estimated that the installation will save 34, 000 barrels of oil over 30 years.

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