- 拱顶: vault; apex of arch; bow of ...
- 锁: lock
- 砖: brick
- 锁砖: key brick; neck brick; rider brick
- 拱顶: [建筑] vault; apex of arch; bow of head; fornication◇拱顶盖 vault head; 拱顶石 capstone; lech; arch keystone; soffit cusp; 拱顶室 alcore; 拱顶支架 bow supporter; 拱顶柱 tambour
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