主要原因

The coronary artery disease is one of the most frequent causes of morbidity and mortality in modernized society.

冠心病是威胁人类健康的主要疾病，是人口死亡的主要原因之一，人们对冠心病的病因学进行了长期的研究。

The azole drugs including fluconazole target lanosterol 14α-demethylase, the product of the ERG11 gene. Ergllp is one of the enzymes in the biosynthesis of ergosterol, the major sterol of fungal membranes and an analogue of cholesterol in mammalian systems.

唑类药物外流也是导致唑类耐药的主要原因，而与之药物外流泵相关的基因有ATP结合盒转运子基因(ATP Binding Cassette Transporter)——CDR1、CDR2和主要易化子基因——MDR1、FLU1，他们的过度表达可以导致唑类耐药的发生。

Be in 3 of man-made board main board in planting, beaverboard develops relatively delay, its are main the development need that the horniness beaverboard quality that the reason is a tradition cannot have gotten used to modern industry economy far, be being washed out stage by stage.

在人造板的三个主要板种中，纤维板发展较缓，其主要原因是传统的硬质纤维板质量已经远远不能适应现代工业经济的发展需要，正逐步被淘汰。

Results of animal experiment showed different changes of cholecystokinin and somatostatin in central, peripheral and regional were the main pathologic factor to causing spleen asthenia in the animal model of liver depression and spleen asthenia, and change of corticotropin releasing factor was the main factor to inducing liver depression.

动物实验结果表明在肝郁脾虚的复合模型中，引起脾虚的主要原因是CCK、SS在中枢、外周、局部的不同含量变化，而CRF的含量改变是肝郁的主要环节。

A major factor in deviation from optimal performance of the activated sludge secondary clarifier is the presence of density currents,resulting from the density difference and temperature difference.

异重流的形成是影响活性污泥系统二沉池水力学性能的主要因素，形成异重流的主要原因包括沉淀池内不均匀的污泥分布和温度分布。

Thermal exposured at 175 ℃ for 100 h and 500 h, the yield strength decreases by 5.5% and 14%, and the elongation decreases by 4% and 9.3%, respectively. The fact that S′(Al2CuMg) precipitates get coarsen and the precipitate-free-zones get wider are responsible for the decline of the tensile properties of 2124-T851 aluminum alloy under thermal exposure condition.

于175 ℃热暴露500 h屈服强度和伸长率就分别降低14%和9%；于热暴露条件下，2124-T851合金拉伸性能衰退的主要原因是合金固溶体基体内主要强化相S′(Al2CuMg)相粗化以及晶界无沉淀析出带的宽化。

Thermal exposured at 175℃ for 100 h and 500 h, the yield strength decreases by 5.5% and 14%, and the elongation decreases by 4% and 9.3%, respectively. The fact that S'(AI2CuMg) precipitates get coarsen and the precipitate-free-zones get wider are responsible for the decline of the tensile properties of 2124-T851 aluminum alloy under thermal exposure condition.

于175℃热暴露500h屈服强度和伸长率就分别降低14%和9%；于热暴露条件下，2124-T851合金拉伸性能衰退的主要原因是合金固溶体基体内主要强化相S'(Al2CuMg)相粗化以及晶界无沉淀析出带的宽化。

This paper firstly studies the main causations for the evolvement of colleger's mentality including international thoughts, domestic environment, popular higher education and cyber-network.

本文从研究大学生思想发展变化的主要影响因素入手，就国际思潮复杂化、国内经济发展快速化、高等教育大众化、成长环境网络化等四个方面的发展变化，分析了影响当代大学生思想发展变化的主要原因。

This paper lists two basic modes of connection breaking in evolving process of self-organizing network, analyses the key factor and proposes a simple and convenient links replacement algorithm based on local connected domain optimization, which can assure the connectedness in evolving processes of network.

本文列举自组织网络不连通的两种主要模式，分析了破坏连通性的主要原因，提出了一种简便可行的基于局部连通域优化的连接置换算法，可以有效保证网络演化过程中的连通性。

Solve problem of good undergraduate obtain employment, work to promoting obtain employment overall situation and safeguard social stability to have very important sense, basically analysed influence undergraduate to want an account and offer corresponding the way to deal with a situation with respect to owner now.

解决好大学生就业新问题，对于促进就业全局工作和维护社会稳定都具有十分重要的意义，现主要分析了影响大学生就业主要原因并提出了相应的策略。

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。