主要原因

They have now identified the main cause of the problem.

他们现在已经发现问题的主要原因。

With the increase of permeability ratio and advancement of inversion opportunity, the cumulative imbibition rate of low-permeability layer decreases.

摘要利用室内并联岩心物理模拟实验及渗流力学的基本定律，对聚合物驱油过程中的剖面返转规律及返转机理的研究表明，油层非均质性是剖面返转的主要原因，随着渗透率级差的增大及返转时机提前，低渗透层累积吸液比例下降。

Using artificial life etc., it has been revealed by computer scientists that some simple moving rule of agents may cause certain optimal behaviors, which are called immergence.

它之所以如此吸引人，其主要原因之一是它的以下特征：基于主体的协作规律可能产生难以想象的整体同步效应，这在复杂性科学中称之为涌现Emergence

The assemblage of different fluid inclusions and the evolution of fluid show that immiscibility is the key element for mineralization.

据不同类型包裹体共生组合及流体演化特征，认为流体的不混溶性是导致大量金沉淀的主要原因。

We have successfully synthesized hydrocarbonbearing inclusions in carbonate at the temperature and pressure of 150 ℃ and 40 MPa, which are near the condition of natural reservoir underground 4 kmAll synthetic hydrocarbonbearing inclusions have been analyzed by microscope and microfluorescence and fourier transform infrared spectroscopyThe results show that the synthesized hydrocarbonbearing inclusions are very similar to those in real reservoirsOur experiments give us four important insights, including:(1) immiscibility of oil and water is the main reason for hydrocarbonbearing inclusions and aqueous inclusions distributed in different fractures;(2) rapid accumulation of oil and gas can be recorded by fluid inclusions;(3) the study of synthetic hydrocarbonbearing inclusions at the temperature and pressure of real reservoir will offer references and standards for the analysis of fluid inclusions in reservoirs;(4) experiment of synthetic hydrocarbonbearing inclusions is a good method for understanding the mechanism of oilwaterrocks interreaction in reservoirs.

文中报道在实际储层温压条件下(150 ℃，40 MPa，大约4 km深度)成功合成了碳酸盐岩烃类包裹体。通过对合成烃类包裹体的显微观察、荧光分析和傅里叶变换红外光谱分析，证实合成了烃类包裹体，且与真实储层中的包裹体具有相似特征，探讨了油水不混溶条件下的流体包裹体捕获机制。实验研究给出4点重要启示：(1)油水不混溶是造成烃类包裹体和水溶液包裹体分带的主要原因；(2)油气快速成藏过程可以被流体包裹体记录；(3)实际储层温压条件下，合成烃类包裹体实验研究有望为储层包裹体分析提供依据和标准；(4)人工合成烃类包裹体为研究含油气条件下储层水岩作用机理提供了一种有效手段。

The main reason for the eco-environment's deterioration is consuming activities of human beings based on immoderate harry for resources and environment.

人类建立在对资源和环境无节制掠夺基础上的消费活动是造成生态环境日益恶化的主要原因。

Ecology and sedimentology research on the lake show that human explore the lake immoderately is the main reason why the ecological system of the lake is broken.

湖泊生态学和沉积学的研究表明，人类对湖泊的不合理开发，是破坏湖泊生态系统的主要原因。

This paper examines the impact of China's present pensionsystem on women's status,and the main reasons for such impact.

本文以养老金制度为例，分析了目前的制度安排对女性人口的影响及主要原因。

This paper examines the impact of China's present pension system on women's status, and the main reasons for such impact.

本文以养老金制度为例，分析了目前的制度安排对女性人口的影响及主要原因。

In my perspective, Chinese government's lacking of political will and medical institution's putting profit-seeking first are the main reason for this imparity.

我认为，中国政府缺乏政治意愿和医疗机构唯利是图是造成这种不平等的主要原因。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。