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Hydroelectric power stations
containing
拱圈
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in specified order only
Chinese
English
内
拱圈
半径
intrados radius
外
拱圈
半径
extrados radius
拱内圈
intrados
拱圈
arch ring
拱圈
中心角
central angle of arch
拱圈
中心角
central angle of an arch
拱圈
分块
楔块
voussoir
拱圈
层
ring course
拱圈
线型
arch shape
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