应用微变等效电路法，对具有同型和异型结构的两类复合管的电路特性，进行了比较系统的分析和研究；
The micro-variation equivalent circuit method is used to analyse and study the circuit features of the multiple unit tubes with the isomorphous or heterogeneous structure systematically.
应用微变等效电路法，对具有同型和异型结构的两类复合管的电路特性，进行了比较系统的分析和研究；
The micro-variation equivalent circuit method is used to analyse and study the circuit features of the multiple unit tubes with the isomorphous or heterogeneous structure systematically.
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