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extrados

n. [建] 拱背

1、[建]拱背

... extractionpump抽气泵 extrados拱背 extraordinaryseriousnaturalcalamity非常严重的自然灾害 ...

2、外拱线

... extractionofgroundwater地下水的抽出 extrados外拱线 extremefibrestress最外缘纤维应力 ...

3、拱背钱

... 拱起的背 hogback 拱背钱 extrados 拱背锯 skew-back saw ...

4、拱背线

... extrados拱背线 extradosradius拱外弧半径 extradosspringing拱背起拱线点 ...

extrados springing拱背起拱线点

extrados radius拱外弧半径

extrados springing line拱外弧起拱线

radius of extrados外拱圈半径

Arch building on extrados拱式拱上建筑

extrados of arch拱外圈

extrados cable-stayed bridge矮塔斜拉桥

girder arch building on extrados梁拱式拱上建筑

土木建筑工程

n.the exterior curve of an arch

1.
N（名词） the outer curve or surface of an arch or vault 拱背 [architect] → compare intrados

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