A typical traffic light control system, there is the countdown display. To achieve a special state function show that the special status of all lights are red state.

 
  • 典型的交通灯控制系统,有倒计时显示功能。能实现特殊状态的功能显示,即特殊状态时所有灯均为红灯状态。
今日热词
目录 附录 查词历史