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- secondary migration efficiency 二次运移效率
- The major transporting layers for secondary migration are sand-beds of Es3, unconformable surface and fault. 油气在烃源岩中的初次运移和在储集层中的二次运移是油气运移过程中连续而特点不同的两个阶段。
- This paper analyzes in detail the transporting and conducting system, time, mode and direction of secondary migration of oil and gas in the sag. 文中详细分析了洼陷内油气二次运移的输导系统、运移时期、运移方式、运移方向，确定了洼陷内油气二次运移时期；
- Buoyant ascent, caused only by the difference between the densities of hydrocarbons and water, is the basic mode of the secondary migration. 是否发生浮力流只取决于油、气与水的密度差,浮力流是二次运移最基本的流动模式。
- The coupling of seepage and stress fields is represented by the effect of stress field on seepage field during oil and gas secondary migration. 渗流场与应力场的耦合作用在油气二次运移过程中突出地表现为应力场影响渗流场。
- By our study of relationship between major oil-generation period and tectogenesis which influnced the oil and gas secondary migration in west slope of DongPu Depression . 通过对东濮凹陷西部斜坡带主要生油期及影响油气二次运移的构造运动的描述,详细探讨了西部斜坡带油气运移的方向及运移机理,为东濮凹陷西部斜坡带下一步滚动勘探指明了方向。
- Oil and gas secondary migration can be divided into two stages according to type of drive: drive by self-weight stress gradient and stacked stress gradient of tectonic and seif-weight stresses. 油气二次运移可分为两个阶段，即沉积物的自重应力梯度驱动阶段和构造应力与自重应力的叠加应力梯度驱动阶段。
- The driving mechanism, the phase and migration direction are identical both in primary and secondary migrations, so that they can be unified. 初次运移与二次运移具有相同的动力机制、运移相态和运移方向，因而两者是完全统一的。
- secondary migration of oil and gas 油气二次运移
- secondary migration of hydrocarbon 油气二次运移
- secondary migration of petroleum 油气二次运移
- We must improve our efficiency as soon as possible. 我们必须尽快地提高工作效率。
- A Research on Secondary Migration of Oil and Gas in Linyi Sag 临邑洼陷油气二次运移特征研究
- Their labor efficiency is very high. 他们的工作效率很高。
- We were most impressed with/by your efficiency. 你的工作效率很高，我们极为钦佩。
- Scientists have studied the migration of fish over long distances. 科学家研究过鱼类远距离回游的现象。
- Such considerations are secondary to our main aim of improving efficiency. 对於我们提高效率的主要目的来说，这些想法都是次要的。
- Our goal is to achieve the maximum of efficiency. 我们的目标是取得最高的效率。
- A diploma is no guarantee of efficiency. 持有文凭不能保证工作效率一定高。
- Her age is of secondary interest. 她的年龄不太重要。
