上部拱圈
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верхний свод
примеры:
中国隋朝大业年间(公元605-618年)建成的赵州桥, 净跨37米, 主拱圈上敷设小拱, 是世界上最早的空腹拱桥, 也是当时世界上跨度最大的石拱桥。
The Zhaozhou Bridge built in the Daye Period (605A. D. -618A. D. ) of the Sui Dynasty (581A. D. -618A. D. ), with a clear span of 37 metres and small arches within the main arch, was the earliest spandrel arch bridge and also the longest stone arch bridge in the world.
пословный:
上部 | 拱圈 | ||
1) верхняя часть; верхняя половина тела; верхний
2) первая часть (сочинения)
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