In this model, running state of transmission line is divided into four states, and calculation method of state probability, state frequency and state duration in balanced state are given.
该模型将输电线路的运行状态划分为四种状态，给出了每种平稳状态的状态概率、状态频率和状态持续时间的计算方法。
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。
The Model H line launched with a durable four-cylinder engine that helped build Chevrolet's reputation as a dependable car. The basic design would power Chevrolets through 1928.
搭载耐用的四气缸发动机的H 型汽车，为雪佛兰赢得“ 坚固可靠” 美誉的同时，亦推动了雪佛兰品牌的迅猛发展，直到1928 年。
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