Because of MediaWiki's popularity, it boasts an active IRC support channel on freenode — #mediawiki — as well as multiple forums on which users interchange ideas and questions.

由于 MediaWiki 很受欢迎，它在自由节点（#mediawiki）上拥有一个活动 IRC 支持渠道，并拥有多个论坛，用户可在上面交流观点和问题。

youdao

When an active signal (one of 8 channels) is detected. Channel SCAN pauses, keeping the active signal broadcasted.

当一个积极的信号(其中8个频道)检测。通道扫描停顿，保持积极的信号播出。

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This thesis introduced the implementation of the digital TV network application of a HFC based uplink access system, which provides the uplink channel for inter-active operation.

本文研究的基于HFC的上行接入系统应用于数字电视网络中，为交互式操作提供上行通道。

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The five two-way speakers each hold two three-inch drivers and a one-inch tweeter, while each of the two 70 watts-per-channel active subwoofers has a roughly eight-inch cone.

FORBES: Sounding Out Home Theater

In 2003, Stanford University spin-out company Cooligy showed off its Active Micro-Channel Cooling (AMC) technology which allowed fluids to circulate through hundreds of tiny channels on the upper surface of a chip.

BBC: IBM aims to cool chips with water

Stop worrying about being active in every possible channel where your target customer might be.

FORBES: Small Business Marketing: Making Sense of Too Many Choices