自动负载频率控制
automatic load frequency control
自动负载-频率控制
automatic load-frequency control
十进制频率控制
decimal frequency control
乘客订票认可与负载控制
passenger acceptance and load control
电网负荷频率控制
grid load frequency control
load frequency control
负荷频率控制
load frequency controlling
load frequency control
Load-frequency control
线负载控制指定
line load control designation