They had to walk across an emergency footbridge, holding onto a rope that served as a rail.
他们不得不抓着当作栏杆用的绳子，走过一架应急人行桥。
IP54, F class, Heavy duty Galvanized wire rope, Rain cover, Wind locker, Rail sweeper, Horn.
防护等级IP54，F级绝缘，高强镀锌钢丝绳，防雨罩、防风锁、扫轨器、声光报警等；
This paper advances some measures for frequency control system of rope-tracting rail vehicles based on PLC in Zhangcun Coalmine.
对漳村煤矿基于PLC控制的绳牵引卡轨车变频调速控制系统提出了若干抗干扰措施。
应用推荐