Based on the equivalent circuit of the linear induction motor and reasonable assumption, a design moted for the linear induction motor is obtained by derivation of equation.
依据直线感应电动机等值电路，在合理假设的基础上，通过公式推导，得出一种设计直线感应电动机的方法。
A new design of soil moisture sensor using frequency domain reflectometry technology is introduced by derivation of equation of high frequency response of transmission line.
通过详细介绍传输线的高频率响应原理及其推导方程，以此为基础设计了基于频域反射的土壤水分探测传感器。
This is what we now call the equation of continuity, one of the relationships necessary for the derivation of the wave equation.
这就是我们现在所说的连续性方程，推导波动方程的必要条件之一。
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