底部框架 meaning in Chinese

lower frame

Fully stressed design method for lower frame structures of a bridge - making machine
造桥机底部框架结构满应力设计
Causes and prevention measures of cracks in cast - in - place reinforced concrete beam
底部框架抗震墙砖房抗震设计应注意的问题
To the structural characteristics , earthquake characteristics of the masonry building with frame - shear wall at first floor , combined with " the antidetonation design specification of the building " , this paper has proposed some main design points from four respects
摘要针对底部框架抗震墙砖房的结构特点、震害特点，结合《建筑抗震设计规范》，提出了四个方面的设计要点。