The characteristics of power line channel are the foundation of designing the low voltage power line carrier communication system.

低压电力线信道特性是设计低压电力线载波通信系统的基础。

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First, power line Communication is introduced. The noise and attenuation characteristics of power line channel are measured and modeled.

首先，介绍了电力线通信，测量并分析了电力线信道的噪声和复衰减特性，并分别进行了建模。

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This article attempts to explore the characteristics of sci-tech communication of the portal websites popular science column(channel).

本文试图探究中国门户网站科普栏目（频道）的一些科技传播现状特征。

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