Four-frame story的意思|示意

In order to demolish an old internally frame reinforced four story building complex in the city, at first, the directional blast was adopted and the blasting drills had been practised.

为了快速拆除杭州市内一幢内部框架加固的四层古式建筑楼房，原设计采用向南侧定向坍塌的爆破方案，并已钻眼确定爆破缺口。

In this paper the response of a twelve-story frame structure installed with one MR damper at the bottom floor under four different earthquake acceleration excitations is analyzed, and r…

从这些问题出发，通过对一在底层安装了一个磁流变阻尼器的十二层结构在不同的地震波滤波工况下减振效果进行分析，得出不同频率输入和减振效果的关系。