Water hydraulic drive system has some advantages of oil hydraulic transmission such as large power, high efficiency and compact structure as well as the unique advantage of environment-protection.

水压驱动系统既保持了油压传动传递动力大、效率高和元件体积小的优点，又兼有环保的积极作用。

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The oil recovery under water drive is an important factor for the evaluation of water displacement efficiency of a reservoir.

油藏水驱开发潜力是分析评价油藏开发开采水平的重要参数。

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Finally, by the use of fuzzy comprehensive evaluation method, we determined the water drive recovery efficiency 24.

采用模糊综合评判方法，最终确定鄯善油田目前水驱采收率为24。

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The efficiency of his design is further improved by using the moving piston to drive water through a special steam nozzle, which increases the effectiveness of the heat transfer between the inside and outside of the reactor.

ECONOMIST: Nuclear power