protection system-protective system的意思|示意

The communication system includes two communication channels for communication of protection and control information between two protective relays on a power line portion of an electric power system.

该通信系统包括在一个电力系统的电力线部分上用于在两个保护 继电器之间交换保护和控制信息的两个通信信道。

Ground-source heat pump air-conditioning system is the green and environment-protective protection central air-conditioning system of real sense.

地源热泵空调系统是真正意义上的绿色环保的中央空调系统。