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In this paper, based on BPA, a software of power system analysis, through the calculations of power flow and transient stability for Zhejiang power system under some typical underexcited operating conditions, the results are revealed that underexcited operation reduces the margin of transient stability of the system.

本文基于BPA系统分析软件对浙江电网若干典型进相运行方式进行潮流分析和暂态稳定计算，结果表明发电机进相运行使系统暂态稳定性下降，但在系统内选择适当的大型发电厂在一定范围内作进相运行，对缓解系统低谷负荷时电压偏高问题是可行而有效的。

Rectifier is not installed, the generator produces a current directly to the battery followed by the system to consume and to have a greater load on the battery installed will enable the supply of power after the stability of demand for power will follow the natural stability of the vehicle power load will naturally improve.

未装设整流器时，发电机产生的电流直接到达电瓶后，随即被系统给消耗并且对电瓶产生较大负荷，装设后可使供应电源稳定，自然需求电源也会跟随稳定，车辆的用电负荷自然会获得改善。

The electric power is one of the important motives of industrial development, the development of modern industry depends on the support of electric power, and the progress of the electric power industry also can not get away from the push of industrial development.

电力是工业发展的重要动力之一，近代工业的发展要依靠电力的支持，而电力工业的进步也离不开工业发展的推动。

In the enlightenment of Nietzsche, Foucault animadverted on historicism through the methodology and theory of power genealogy, and emphasized a triangle relationship of power knowledge and body, in which power is dominative.

同时，福柯受到尼采的启发，以权力谱系学的思想和方法批判了历史主义，强调了一个权力-知识-身体的三角关系，其中权力具有支配性地位。

But the development of electric power and use, the development of the electric power that is based on fossil fuel especially and use, bilked the environment with living to constitute menace to the mankind however, environmental protection problem already became the main factor that restricts development of prospective power industry.

但电力的开发和利用，非凡是基于化石燃料的电力的开发与利用，却给人类赖以生存的环境构成了威胁，环境保护问题已成为制约未来电力工业发展的重要因素。

Secondly, based on the function analysis of EV test bench, using the modular design idea, this dissertation compartmentalizes the functional module of EV test bench, and analyzes the essentially comprising of the modules such as driving module, power take off module, inertia simulation module, load simulation module, main control module and power supply module. Especially introduces selection principles of driving motor of power take off module.

其次，在对电动汽车试验台功能进行分析的基础上，采用模块化设计的思想对电动汽车试验台的功能模块进行了划分，并就驾驶引导模块、动力输出模块、惯量模拟模块、负载加载模块、试验台主控模块和电源模块的基本组成进行了深入分析，并在动力输出模块部分着重介绍了驱动电机的选择原则。

H-bridge switching power amplifiers are popular for their high efficiency and large power output.Based on analysis and experiments of mainstream DAA and DAPS, a 10W H-bridge power amplifier circuit is designed with JAZZ 0.5um BCD technology.

本文在分析国内外数字音频功放及后级开关功率放大器现状的基础上，采用JAZZ的0.5umBCD工艺，设计了一种高效率宽功率输出范围的数字音频H桥功率放大电路。

A multi-period reactive power optimization method based on two-layer genetic algorithm is presented,which recasts the complex reactive power optimization problem into a parallel processing problem of multi-period static reactive power optimization.

提出了一种基于两层遗传算法的多时段无功优化方法，将复杂的无功优化问题转化为多个时段静态无功优化的并行处理问题。

The control and maintenance of high temperature for aspergillus oryzae koji－making has great effects on saccharifying power and liquefaction power and fermenting power of Fengqu Starter, and the optimal temperature is at 58～62 ℃ and it should be maintained at least three days.

米曲霉制曲大火温度的控制和维持时间长短对凤曲的糖化力、液化力和发酵力影响较大。制曲大火温度以控制在58～62 ℃为宜，且至少维持3天以上。孙悟

Tile special system structure of Chinese traditional society decided the central and leading position of political powers,and forming the situation in which political power led and control economic resources distribution and allocation Tiffs was firstly shown in the process of resources distribution in the period of post revolution at the early foundation of dynasties Tien it was reflected in various periods of normal evolution of all dynasties It essence is what Marx said"power plays tricks on property"Such situation existed widely in ancient China.which not only twisted market but also caused rooted worship of power It has negatively influenced the development of modernization of China

中国传统社会特殊的体制结构决定了政治权力的中心和主导地位，形成了政治权力主导和支配经济资源分配及配置的局面。这首先表现为王朝建立之初的后革命时期的资源再分配过程中，其次也反映在各个王朝常态演进的各个时期里，其本质正是马克思所说的&权力捉弄财产&。这一情况的普遍存在，在中国古代不仅造成了市场的扭曲，还带来了根深蒂固的权力崇拜，给近代以来的中国现代化进程带来了严重的负面影响。

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。