Gas cap drive is relatively efficient, producing an average of 35% of the oil in place.

气顶驱是相对较为有效的一种驱油机理，平均可采出原油地质储量的35%。

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There are large number of oil fields developed under gas cap drive in operation currently, however, much less studies on the reservoir behavior of such oil fields have been carried.

气顶油藏的开发在油田开发中占有很大的比例，然而利用油藏工程方法研究气顶油藏的开采动态要比油藏开发少得多。

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A volunteer demonstrated an electrode cap with which he could drive a wheeled robot around the room.

一位志愿者展示了能够在房间内驾驶的轮式机器人的电极头罩。

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For the equipment makers, he says, that could mean a modest reduction in overall cap ex and drive a flat 2013, rather than the low-teens growth rate he previously had expected.

FORBES: Connect

Such rhetorical leaps and pirouettes conceal something more pragmatic: a drive by CAP supporters to find mechanisms that do not involve big subsidies but still stabilise the incomes of farmers.

ECONOMIST: Charlemagne

The Ravens helped that notion along: To cap off their next drive, Ravens punter Sam Koch made a bad kick that was returned by Ted Ginn Jr. to the Ravens' 20-yard line.

WSJ: Super Bowl XLVII: Baltimore Ravens Have Just Enough Power to Beat San Francisco 49ers