In addition, using the relationship among recovery percent, displacement and volumetric sweep efficiency, the equations for estimation of the volumetric sweep efficiency and.
利用采出程度、驱油效率和体积波及系数三者关系，给出了体积波及系数与可采储量采出程度的计算公式。
The paper raises and proves an essential condition of volumetric property of nonnegative secondary estimation of deviation and variance in linear model.
文中给出并证明了在椭球约束条件下线性模型中，误差方差的非负二次估计的可容许性问题的一个必要条件。
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