Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/6bbb77f58d5932b412b98d33faf6344f.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 personnel signaling system是什么意思，personnel signaling system的翻译，personnel signaling system音标、读音、用法和例句_沉淀汉英词典
Railway signaling station indication panel system is an important device for scheduling personnel of railway station to schedule tasks. 车站信号表示盘系统是车站调度人员进行作业调度的重要设备。