Lamps for traffic lights - part 2 : high - voltage lamps for fixed signal lights 交通信号灯.第2部分:固定信号灯用高压灯
2.
Lamps for traffic lights - part 1 : extra low voltage lamps for fixed signal lights 交通信号灯.第1部分:固定信号灯的超低压灯
3.
Railway transport equipment . signalling equipment for rail vehicles . fixed signalling . electric signals . arrangement and characteristics 铁路运输设备.铁路车辆信号设备.固定信号装置.电信号.配置和特性
