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annular vault
archit.
环形
椭圆
穹顶
拱顶
;
筒
圆
形穹顶
;
椭圆拱顶
construct.
筒 〔环〕形拱〔穹〕
oil
环形穹顶
tech.
筒形拱顶
;
圆形穹顶
;
圆拱顶
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