TRMS electricity isolated sensor is designed for test that can not be tested exactly by average test method, RMS is also root mean square.
真有效值电量传感器是针对平均值测量法不能准确测出其有效值而设计的。有效值又称均方根值（rms）。
2
Recurring to the path information provided by GIS, This function of the TRMS can effectively facilitate the maintenance of the Tele-Communication resource.
借助于GIS提供的道路信息，系统这一功能可以快速有效地为电信资源维护工作提供帮助。
3
The principle and method of design of a digital TRMS electrical parameter test instrumentation by use of high performance CS5460A were introduced, its circuit was also partially given.