主要原因

This is believed be the predominant mechanism for ascites formation.

该因素被认为是腹水形成的主要原因。

It is found that the aggregation properties of asphaltene were depended on its bulk concentration and the aromaticity of oil phase.

实验进一步表明沥青质相对复杂的分子结构及自缔合倾向，也是产生沥青质界面膜老化的主要原因。

Primary cause of these hidden dangers is the asymmetrical information in the food market.

产生这些隐患的主要原因是食品市场的信息不对称。

Historically, asymmetrical access to information is one of the leading causes of interstate conflict.

从历史上看，不对称的信息获取能力是国家间冲突的主要原因之一。

Historically,asymmetrical access to information is one of the leading causes ofinterstate conflict.

从历史上看，不对称的信息获取能力是国家间冲突的主要原因之一。

A cause of administrative corruption is the information asymmetry between the government and the people.

政府和公民之间的信息不对称是腐败的主要原因。

But at the same time, the development of economy is at a cost of the destruction of environment.

首先，世界范围内生态环境的不断恶化是技术性贸易壁垒持续发展的主要原因。20世纪以来，随着工业的高速发展和科学技术的进步，世界各国经济都不同程度的在原有基础上实现了很大的增长，同时人们的生活水平也得到和大幅度的提高，这是值得肯定的。

Take a good guess at which physical activity can be most attributed ...

以良好的猜测是体力活动可以最主要原因。。。

Methods. A 60-year-old man with athetoid cerebral palsy and a history of posterior occipitocerical fusion presented with quadriparesis. Salage surgery for cerical myelopathy and pseudarthrosis was performed with laminectomy and rearthrodesis using the pedicle screw system. An intraspinal cyst was identified as the main cause of the paraparesis.

一位60岁的手足徐动症样大脑麻痹患者，既往曾行后路枕颈融合术，临床表现为四肢轻瘫，影像学检查示脊髓型颈椎病和假关节形成，采用椎板切除和椎弓根钉系统关节成形术后，发现椎管内存在的囊肿是导致四肢轻瘫的主要原因。

The results indicate that the effect of alloying elements V and Cr on mechanical properties at room-temperature, creep behavior and microstructures are similar. With increasing contents of V and Cr, their mechanical properties produce little change, the creep resistant property decreases and microstructure grows, which is mainly due to their characteristics of β-stability element and smaller atomic radius compared with Ti. On the contrary, the effects of V and Cr on the thermal stability are quite different. With increasing V content or decreasing Cr content the thermal stability for the alloy becomes better, which may be due to the different solution characteristics of V and Cr element in titanium alloy that V belongs to isomorphous β-stability element and Cr belongs to eutectoid β-stability element.

结果表明：合金元素V和Cr对Ti40合金室温力学性能、蠕变行为和组织的影响具有相似性，即随V和Cr含量的降低，合金室温综合力学性能变化不明显、抗蠕变能力减弱、组织粗化：这与V和Cr同属于β稳定元素、且原子半径都小于Ti原子有关；而V和Cr对于热稳定性能的影响则完全相反，V含量的增加或Cr含量的降低含金热稳定性能优化，其主要原因可能与V属于同品型β稳定元素而Cr属于共析型β稳定元素有关。

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。