crude mortality ratio 粗死亡率 ; 自然死亡率
stripping to crude ore ratio 原矿剥采比
crude oil recovery ratio 原油采收率
the ratio of crude oil 原油加入量
Combined with other factors that have influences on gas dissolution, the theoretical equation of gas 'mole solubility in crude oil and that of gas-oil ratio in crude oil are derived.
在此基础上，综合考虑影响气体溶解的其他因素，推导出气体在原油中的摩尔溶解度理论方程和气油比的理论方程。
There are two method to measure the weight ratio of crude benzene.
测定粗苯重量比，有色谱法和蒸馏法两种方法，其中蒸馏法为仲裁方法。
Applying the methodology of standardized crude rate is necessary to remove the impact of the age structure so that the standardized dependency ratio and demographic dividend can reflect the reality.
只有应用“粗率”的标准化方法，对劳动年龄人口的年龄进行标准化，消除年龄结构的影响，“标化”人口抚养比和人口红利，才更有可能反映实际。
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