high frequency channel的意思|示意

Variable frequency altering-speed system of supplying water for high building using PLC control was designed by double-channel integral circuit.

应用电子技术按设定频率上、下限实现自动转换的双通道积分电路，并按此设计PLC控制的变频调速高楼供水系统。

High-frequency band-pass filters(several hundred MHz) are used for Channel selection in telephone central offices.

高频带通滤波器（几百 MHz）用于电 话中心局的信道选择。

OFDM (Orthogonal Frequency Division Multiplexing) is a new modulation technology, it is suitable to high-data-rate transmission in the wireless transfer channel with multi-path transmission.

正交频分复用(OFDM)是一种新型调制技术，特别适合在多径传播的无线移动信道中高速传输数据。

The classic analysis of high-frequency (HF) protection only takes account of the channel delay effect of HF signal, neglects the delay effect of electric traveling wave.

高频保护传统分析方法仅考虑高频信号在通道中的延时效应，没有分析电气量的行波延时效应。

OFDM is a high transmission technology in the wireless propagation environment. It is fitted to transmit high-speed data in the wireless channel which has multi-path delay and Doppler frequency shift.

OFDM是一种无线传播环境下的高速传输技术，适合在多径传播和多普勒频移的无线信道中传输高速数据。

Fitting operating frequency of Xinsai line high-frequency channel is decided through sweep checking of the channel.

通过对新赛线高频通道进行扫频试验，选择适合该高频通道的工作频率，有效地减小了该高频通道的衰耗。