mobile scaffold tower是什么意思

用法例句

As the horizontal rods are made of timber,the portal-frame scaffolding shows several disadvantages in practice when used in form panel bracing,which have limited its wide applications.

门式脚手架用于模板支撑时 ,由于采用木方作为其水平杆 ,在实际工程应用中出现了许多问题 ,而且制约了门式脚手架的发展 。