Chemical oxygen demand is one of the important parameter in water monitoring.
化学需氧量是水质监测的一个重要参数。
The online monitoring parameter, equipment and data transmit mode were chosen.
确定了在线监测指标，选定了在线监测仪器和在线数据传输方式。
The online monitoring parameter, equipment and data transmit mode were chosen.
确定了在线监测指标，选定了在线监测仪器和在线数据传输方式。
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