The connection rod is a telescopic structure.
连接杆为伸缩结构。
Ji 'nan telescopic Peng is the building envelope structure, its setting is in the building wailimian.
济南伸缩蓬是建筑的围护构造，其设置就是在建筑物的外立面。
The structure, work principle and application of tubing telescopic unit is introduced.
简要介绍了管柱伸缩器的结构、工作原理及用途。
应用推荐