詞語：extrados
extrados的解釋
extrados[eks'treidɔs]n. [建]拱背
extrados的意思
extrados 拱背;外拱線;拱背錢;拱背線;extrados of arch 拱外圈（拱背線）;extrados springing line 外拱圈起拱線;
extrados的參考例句
1.an arch with a straight horizontal extrados and a slightly arched intrados. 一種拱背水平、拱的內面有個輕微彎曲的拱形。
2.By data fitting of FEA, an empirical formula of the limit pressure for elbows with local thinned area on inner wall of extrados has been attained. 由有限元計算結果數據擬合出了外拱內壁局部減薄彎管塑性極限內壓的計算公式。
3.Then, based on the seismic response analysis of the extrados cable-stayed, influence of high-order vibration modes on dynamic behavior of the bridges is analyzed. 在分析矮塔斜拉橋地震反應的基礎上，通過引入振型貢獻率的概念，分析了高階振型對矮塔斜拉橋動力性能的影響；