主要动力

The stude announces that their changeable regular of the center of gravity level speed in supporting phase is falling in tne first cushioning phase. When their center of gravity's vertical lines pass their heels and their knee joints go on extended contraction ,their center of gravity level speed has extended .the reason is that their angles have passed the heels and their swinging legs' kenn joints have swinging the front of their bodies. Its power originates the swinging leg's forward active swinging and the decurtation contraction of hip joints 、ankles of the supporting legs.the swinging leg shows "the calf's active backward swinging"before its landing impact,the skill affects the loss of center of gravity level speed when the swinging leg lands.they enlarge their trunks' forward-landing impact phase ,it can decrease the center of gravity level speed's loss after landing and impel the center of gravity level speed to pass the supporting spot quickly.

两人缓冲阶段身体重心水平速度变化规律是在体前缓冲阶段呈下降趋势；当身体重心垂线超过脚后跟后，在膝关节继续缓冲做退让收缩的情况下身体重心水平速度开始加大，原因是踝关节在最大缓冲时身体重心已移过支撑面及摆动腿膝关节已做体前摆动，主要动力来源于摆动腿的积极前摆和支撑腿髋、踝关节的克制性收缩；在摆动腿下压着地前期是大腿积极下压小腿随大腿的积极下压顺势向前下滑摆，在摆动腿下压着地后期表现出"小腿积极回摆"技术，对减小着地时的水平速度损失、加大向前用力都有积极影响；适当加大摆动下压着地阶段躯干的前倾角度，有利于减少着地时相的速度损失和有利于身体重心较快的移过支撑点；缩小后蹬结束后的后伸动作幅度，有利于减小腾空时间。

That the 16th world accountant convention concluded in Hong Kong recently made "knowledge economy and accountant" as its topic, had indicated people's attention to the challenge of accounting under the new economy, and reveals the necessity and pressure of the lucubration in the relationship between the knowledge-based economy and accounting.

会计的发展史表明，社会经济环境与科学技术是会计发展的两大主要动力。

It has been the mainspring of every subversive movement during the 19th century.

它一直是主要动力，每颠覆运动，在十九世纪。

The love of God is the mainspring John 3:16; Rom.

上帝的爱是主要动力（约翰3：16 ；光碟。

Fear is the mainspring of war.

恐惧是战争的主要动力。

The mainspring runs only four hours, but it can also be converted to weight drive with autowinding.

运行的主要动力，只有4个小时，但它也可以被转换为驱动器的重量与autowinding 。

However complex the workings of the Hong Kong economy, the mainspring that drives the mechanism is simple enough.

不管香港经济的运转有多么复杂，推动这一机制的主要动力非常简单。

Intelligent discontent is the mainspring of civilization.

心智的不满是文明发展的主要动力。

ABSTRACT The variable displacement pump is a major element in hydraulic volume control system.

变量泵是液压容积控制系统中的主要动力元件。

What do you think is the main motivation for working for a company?

3，你认为什么是为一个公司工作的主要动力？

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。