前者是通过对载波信道的频率特性时变性测试、分析，实现信号平稳传输。
The former realizes steady transmission of signal by testing and analysing the carrier channel's frequency characteristic .
本文从理论上较详细的分析了传输线变压器的工作原理、传输线特性、频率特性，及大功率容量特性及其应用。
This paper describes the basic principle of transmission-line transformers and its transmission characteristics, frequency characteristics, available capacity properties, and its application.
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