power-supply efficiency

Compared with the rotating induction motor, the linear induction motor has many advantages, such as: the low noise, the climbing ability, the non-adhesive drive and the small radius through curves. But the low efficiency and the low power factor restrict its development.

与旋转感应电机相比，直线感应电机具有噪声小、爬坡能力强、非粘着驱动和通过曲线半径小等诸多优点，但是效率和功率因数低制约了其发展。

After calculating the output power of submersible propeller based on thrust, the axial power and the installed power necessary for submersible propeller can be calculated by efficiency of propeller and efficiency of motor which are supplied by the manufactory.

根据推力计算出推动器的输出功率后，可通过厂家提供的产品螺旋桨效率η螺和电机效率η电机来求得推动器所需要的轴功率和装机功率。

General expressions of the times spent on two constant-frequency processes, work, thermal efficiency and power output are derived. Moreover, explicit curves between thermal efficiency and power output with the time of low constant-frequency processes are generated.

推导出循环在两等频率过程的时间、输出功、效率和功率的一般表达式，并获得了效率和功率与低等频率过程时间之间的关系曲线。

As spirit of the law, the theoretical power of the non-right action of disposition lies in its close association with civil juristic acts, the efficiency of the contract, the illegal profits and bona fide gains.

作为法学上的精灵，无权处分的理论魅力在于其与法律行为、合同效力、不当得利、善意取得等制度的关联。

Therefore, theoretical line loss calculation is an important work in the electric power enterprise. By means of line loss analysis and optimization we can save energy, improve economic efficiency and achieve the ultimate purpose of the line loss management work.

因此理论线损计算是电力企业工作中的一项重要内容，同时通过线损分析与优化，实现降损节能、提高经济效益，更是线损管理工作的最终目的。

On this base, the radiating theory of surface mount power MOSFETs, several kinds of high efficiency radiating way and application range are introduced through analyzing and deriving.

基于此，通过分析和推导，介绍了表贴功率管的散热机理和几种不同的高效散热方式及应用范围。

Comparative means is applied to analyze the efficiency of power consumption of light-heavy industries, main basic manufacture industries, living and technical processing industries, and ways of raising the efficiency of power consumption of industrial enterprises are defined.

运用比较的手法，分析了轻重工业、主要基础制造业、生活，以及技术加工业用电效能，明确了提升工业企业电力使用效能的方向和途径。

Electrosynthesis, with clean power, can synthesize organic compounds directly and improve yield efficiency and reduce the three wastes;

采用有机电合成技术，利用电子这一清洁的能源，实现一步反应合成有机物，提高产率，降低三废污染；

The optimal relations between power and isentropic temperature ratio exponent, and between efficiency and isentropic temperature ratio expo-nent are derived, by which the optimal relation curve between power and efficiency can be obtained.

导出最佳效率时的功率与等熵温比指数、效率与等熵温比指数的关系式，以及最佳面积比，进而得到最佳效率与功率关系。

On the purpose of improving efficiency of continuously variable transmission with reflux power, efficiency of previous system under low gear and reverse gear have been analyzed to optimize its structure based on analysis of speed modulation characteristic and transmission efficiency of transmission system.

在回流式无级自动变速传动系统调速特性和传动效率分析的基础上，以提高效率为出发点，通过对原有系统低速档、倒档工况下的效率分析，并对原有结构进行了优化。