利用等效传输线理论，得到第一设计方程；
The first design equation is derived using equivalent transmission line theorem.
针对上述问题，本文首先通过传输线理论建立了机车用电缆的分布参数模型，以及变频调速牵引电机的高频等效电路。
In allusion to the problems mentioned above, firstly, the paper models the distribution parameter circuit of the cable and the high frequency circuit of motor through the transmission theory.
利用均匀传输线理论，将测量电缆用均匀传输线模型等效来校正测量结果。
According to the transmission line theory, a correction method which USES a homogeneous transmission line to simulate the cable is put forward.
本文依据传输线理论、微波网络理论、天线原理、矩量法和矩阵理论等，建立起基本传输线方程和四种等效电路模型，为使用集总电路迭代近似方法建立了基础。
In this paper, basic transmission line equation and four kinds of lumped-circuit model were constructed according to transmission line theory, microwave network, antenna theory and matrix theory.
本文依据传输线理论、微波网络理论、天线原理、矩量法和矩阵理论等，建立起基本传输线方程和四种等效电路模型，为使用集总电路迭代近似方法建立了基础。
In this paper, basic transmission line equation and four kinds of lumped-circuit model were constructed according to transmission line theory, microwave network, antenna theory and matrix theory.
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