单词extrados
n.: 【建】(拱的)拱背线
网络: 拱背钱；外拱线；拱顶
【建筑】(拱的)拱背线,外弧面,外曲线
外拱圈
the mechanical properties at the intrados and extrados of the elbow are obvious different.
使该弯头外弧和内弧力学性能存在明显差异。
Finite Element Analysis of Plastic Limit Pressure of Elbows with Local Thinned Area on Inner Wall of Extrados
外拱内壁局部减薄弯管极限内压有限元分析
Dynamic behavior of concrete extrados cable-stayed bridges with single cable plane
单索面混凝土矮塔斜拉桥的动力特性
Method of Reinforcement and Reducing Load on Extrados of Arch Bridge
拱桥拱背加固减载法