up-pulling相关论文
Electroslag casting (ESC) is an important method to produce high quality castings. In this study, the ESC up-pulling inn......
结合具体工程实例,通过介绍上拉悬挑式钢平台外脚手架设计和计算过程,解决了由于工期紧、场地限制等原因造成外脚手架不能搭设在建筑......