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。
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。
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