luminous-signal system

例句：

1. 1. The newlight signal system has greatly improved our work efficiency.
   新的发光信号系统大大提高了我们的工作效率。
2. 2. The luminescent signal system is used to indicate the presence of danger.
   发光信号系统用于指示危险的存在。
3. 3.The luminous signal system was designed to provide emergency warnings during a power outage.
   发光信号系统被设计用来在停电期间提供紧急警告。