1) 4-limb latticed section
四肢格构型截面
1.
4-limb latticed section is a common section type of large-span concrete filled steel tubular arch bridges.
四肢格构型截面是大跨度钢管混凝土拱桥常用的截面型式,在具体构造上有缀板式和缀条式2种。
2) four-tube
四肢格构
1.
Most of long-span CFST arch bridges are used of the four-tube section.
目前已建及在建的大跨径钢管混凝土拱桥大都采用四肢格构型截面。
4) columns consisting of four equilateral steel angle
等边角钢四肢格构柱
5) variable section with a fork shape
变截面分肢
6) tetrahedra configuration
四面体构型
1.
The valence bond theory was perfected;The properties of the electron-pair bond was proposed;The problem of the tetrahedra configuration of carbon atom was resolved;theory of hybrid bond orbitals was established.
文章介绍了鲍林价键理论的思想起源和形成过程:接受路易斯的化学键电子理论;吸取海森伯的量子共振概念;得到海特勒和伦敦对氢分子结构近似处理的启发;从而完善了价键理论,提出了电子对键的六条规则;解决了碳原子四面体构型的问题,建立了杂化轨道理论。
补充资料：四肢
四肢
左、右、上、下肢的总称。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条