单词overhead-door
网络: 升降门；韩国求购升降门；上升卷门
The overhead door is formed by connecting a suspension box, a vehicle door and a drive system.
它由悬挂箱、车门、传动系统三部分连接而成。
Carry out quarterly check and maintenance of crane and overhead door, and make it work.
每季度对于公司行车以及升降门进行检查保养，排除相关故障；
Components of sectional overhead door
分段式升降门的部件