1·Water quality: installation of closed circuit cooling, installation of treatment plants.
水质量：安装闭路冷却，安装污水处理设备。
2·Guest: : Next Moday. By the way, is there a closed circuit TV?
客户：下周一。再问一下，房间里有闭路电视吗？ ？
3·This article discusses the selection of compatible closed circuit television channels in all channel CATV system and explains how to use pocket computer to aid the design.
本文就全频道CATV系统中如何选择相容的闭路电视频道进行了探讨，并介绍了如何用袖珍计算机进行辅助设计问题。
4·Security experts recommend increased use of closed circuit cameras, and the establishment of a long-delayed national intelligence grid to better track the movements of suspected terrorists.
印度安全专家建议增加利用闭路式摄像机，和建立耽搁已久的国家情报网，以便更有效地取得恐怖嫌疑人的作案行迹。
5·The first includes the automation of station security in the use of smart-card access, the installation of automatic barriers and closed circuit television monitoring systems.
第一项计划是利用“聪明卡”出入、安装自动闸及闭路电视监察系统，使警署保安设施自动化。