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extrados

美[ek'streɪdɒs],英[eks'treɪdɒs],

释义

n. 【建】(拱的)拱背线; 网络释义: 拱背钱;外拱线;拱顶;

例句

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。

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