This paper introduced the features and applications of monitoring instrument online of the water quality, for example COD online monitoring device.

本文以COD在线监测仪为例，介绍水质在线监测仪的特点和应用。

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Distributed online temperature monitoring system studied in this paper can monitor HV device in the real-time way, and can cut off the failure circuit so as to implement protecting function.

本文研究的应用于高压电气设备上的温度在线巡回监测系统可以实时监测设备故障，自动切断故障电路，实现保护功能。

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