This paper introduces how to measure output of the inverter by simulating quantity of it, and the method for calculating the efficiency of variable-frequency motor.

本文介绍了如何通过变频器的模拟量输出来测量变频器的输出功率，进而计算出变频电动机效率的方法。

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The switching on-off flows are introduced in this paper. By calculating electrical parameters and simulating the switching motion process, the switch can achieve the current transfer of huge current.

本文制定了开关投切的工作流程，通过电气参数计算并对开关投切过程进行仿真分析，本文所设计的开关能够实现特大电流的电流转移。

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A software for simulating and calculating the temperature field in rolling tire has been developed by using the analytical function of nonlinear finite element based on the thermal stability analysis.

在轮胎热学稳态分析的基础上，利用有限元非线性分析功能，开发滚动轮胎温度场有限元模拟计算软件。

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