Respirometry is very widely used to characterize the activated sludge system and to control its operation in wastewater treatment plant.

在监测污水处理厂活性污泥系统的状态,控制其运行时,人们广泛采用了呼吸测量法。

Except the use of time relay to control the pressure maintaining and cooling, the rest all takes a route switch to control the ordinal operation and speed changes for each hydrocylinder.

本系统ㄋ采用时间继电器控制保压和冷却动作外，其余都采用行程开关控制各油缸依次动作和进行速度换。