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

该文涉及的就是智能楼宇可视对讲系统研究的一个课题。

youdao

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

该文涉及的就是智能楼宇可视对讲系统研究的一个课题。

youdao