The pressure factor is not a constant for given natural water drive reservoir.

压力系数对于任何具体的天然水驱油(气)藏不是一个常数。

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Pressure factor is defined as the ratio of initial reservoir pressure and the corresponding hydrostatic pressure.

压力系数定义为原始地层压力与静水压之比值。

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Analysis on various pressure factor and the proportion: Worrying about making mistake was in the first place, which reached 78.01%.

各种压力因素及所占比例分析：担心差错事故的发生位居首位，高达78.01%；

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Columnist David Ignatius agrees with the president's move, saying Pakistan is a key factor in the new strategy,and the pressure on it must be increased.

VOA: standard.2009.12.06

Donor pressure is one factor.

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"In my study, the model minority pressure is a huge factor, " says Noh, who studied 41 Asian-American women who'd attempted or contemplated suicide.

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Chan highlighted the current state of the Eurozone as another factor putting downward pressure on risk-assets.

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