pilot indicating lamp航向指示灯
pilot t lamp指领示灯
auxiliary pilot lamp辅助信号灯
PL pilot lamp指示灯
pilot lamp test信号灯测验法
master piece pilot lamp总指示灯
PILOT LAMP PUSH BUTTON指示灯按钮
indicator light pilot lamp指示灯
attenuation step pilot lamp衰减分级指;衰减分级指示灯
N(名词) a small light in an electric circuit or device that lights up when the circuit is closed or when certain conditions prevail 指示灯