...extraem... extradition（根据条约或法令对逃... extrados拱背（拱的外缘线）... extradural硬（脑）膜外的...
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extrados springing 拱背起拱线点
extrados springing line 拱外弧起拱线
extrados of arch 拱外圈
extrados radius 拱外弧半径
radius of extrados 外拱圈半径
Arch building on extrados 拱式拱上建筑
extrados cable-stayed bridge 矮塔斜拉桥
girder arch building on extrados 梁拱式拱上建筑
N the outer curve or surface of an arch or vault 拱背 [architect] → compare intrados
An arch with mutually supporting voussoirs that has a straight horizontal extrados and intrados.
有水平拱背和水平的内弧面的互相支撑的拱石的拱。
The results of FEA method for cold-bending elbow predicted that the point of maximum stress is transferred from intrados to extrados with the increase of the wall thinning.
并应用有限元方法分析了冷弯弯头的应力状况，得出其最大应力发生点随着外拱处壁厚减薄量的增大而向外拱处转移。
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