主要原因

Unscientific exercising ways would damage key areas of the body of the exerciser, being the main cause for sudden death in exercising.

不科学的运动方式，使运动者身体关键部位损伤，是运动猝死的主要原因。

Main factors that caused the low heat efficiency and high energy consumption were inadequate atomizing of heavy oil, low combustion air preheating temperature, high exhaust fume temperature and low insulating perfomance of furnace wall.

造成加热效率低、能耗高的主要原因有：重油雾化不充分，助燃空气预热温度低、排烟温度高、炉墙保温性能下降等。

TYPICAL USE:Automobile exhaust fumes are one of the major causes of smog.

汽车挤出的烟是造成烟雾的主要原因之一。

The traditional ideal considers that the progress of science and technology is an exogenous variable of economic developm ent. Thus, science and technology is separated from the market.

传统观点认为科技进步是经济发展的外生变量，由此导致了科技与市场的脱节，这是中国科学技术发展缓慢的主要原因。

In compressor and expander, leakage loss is the main factor of influencing their efficiencies.

在压缩机和膨胀机中，泄漏损失是影响效率的主要原因之一。

Improper construction of the expansion joint of bridge deck is the main cause to create bump on bridge deck.

桥梁桥面伸缩缝施工不当是造成桥面发生跳车颠簸的主要原因。

The results show that the stress corrosion is the main failure causing of the bellows expansion joint,while the local pit corrosion,residual stress and the working stress is the necessary condition.

结果表明，应力腐蚀是该膨胀节失效的主要原因，而局部的点蚀和残余应力、工作应力是应力腐蚀的必要条件。

In this paper, the Beijing mountain as a big ecosystems is studied, the use of RS technologies on the ecological degradation of mountain conditions of the remote monitoring of the dynamic, given explanatorily the ecological degradation monitoring indicators and calculation methods, the degradation of mountain ecosystems derived monitoring results, and in accordance with the monitoring results to identify the main reason for the degradation of mountain ecosystems.

本文把北京山区这么一个大的生态系统作为研究对象，利用RS技术对山区的生态退化状况进行了动态的遥感监测，探索性的给出生态退化相关的监测指标和计算方法，得出山区生态退化的监测结果，并根据监测结果识别山区生态退化的主要原因。

The results show that, the main reason for the ammunition exploder falure is that PVAC is degraded to HAc, and HAc diffuses to exploder inside leading to its corrosion.

结果表明，某引信失效的主要原因是弹药中炸药组分聚醋酸乙烯酯降解为醋酸，醋酸扩散至引信内部导致金属材料的腐蚀。

She didn't think her employer was exploitative , though low wages were the main reason she wanted to emigrate to the United States.

她并不认为她的雇主刻薄，尽管低工资是她想移民到美国的主要原因。

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。