level of tail water的意思|示意

When the tail water level is higher than the ground of a hydro-power plant, the repairing and safety of the plant will be affected without water seal in the tail gate.

当水电站尾水位高于厂房地平面时，如果尾水闸门不能止水，势必影响电站的检修和安全。

Ultrasonic liquid level gauge used to real-time measure the upper level and tail level of the two sections , then the computer calculated average water level, gradient of water table and discharge;

用超声波液位计将测流渠段的上下游两断面水位实时测出，再用计算机分时段算出平均水位、水面坡降及流量；