The chemical and volumecontrolsystem functions to maintain the coolant inventory, to control the coolant chemistry and to adjust the boron concentration of the reactor coolant system.
化容系统的功能：维持主系统的水装量，控制主冷却剂的化学性能和调节主系统的硼浓度。
2
The volume of scheduled flights is straining the air traffic controlsystem.
定期航班的数量使空中交通控制系统受到压力。
《柯林斯英汉双解大词典》
3
They are aimed at either cleaning the water in the primary system, providing separate shutdown cooling functions, water chemistry, charging and volumecontrol, makeup water.