The valve has the two control loops for normal regulation and emergencyclosure respectively.
此阀有两个控制回路,分别用于正常调节和紧急关闭。
2
EU diplomats said ahead of Monday's emergency meeting in Brussels that a draft EU agreement was set to declare the closure of the Balkan migration route.
Analyze the factors which influence failure effect, and constitute mitigation methods of failure effect according to situations of meeting an emergency, closure and management after an accident.