小区配备管道纯净水，可视对讲系统。

The district allocate pipeline pure water, can look at system of talkbacking.

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第三部分阐述的是可视对讲系统的设计。

The third part is the design of visual intercom system.

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该文涉及的就是智能楼宇可视对讲系统研究的一个课题。

This article is a topic about research on the visual-speaking system for intelligent building.

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该文涉及的就是智能楼宇可视对讲系统研究的一个课题。

This article is a topic about research on the visual-speaking system for intelligent building.

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