dome of the first order的意思|示意

The need to create a large dome (1500 m in diameter and a height of 350 meters) was the first step in order to create a microclimate that can respond to the climatic problem Astana.

创建一个直径1500米高度350米的大圆顶是该项目的第一步，如此一来，就会创建出一个小气候，为阿斯塔纳的气候问题做出回应。

The first 20th order natural frequencies and vibration modes of the single layer spherical dome are obtained, and its vibration law is also analyzed by using subspace iteration method.

结合一工程实例，采用子空间迭代法求出了该网壳结构的前2 0阶自振频率和振型，分析了其振动规律；