藝術與建築詞典根目錄
....物件層面
........組件 (層級名)
............成分
................<依特定背景區分之組件>
....................建築元素
........................<結構元素與結構元素構造>
............................<結構元素>
................................<封閉式結構元素>
....................................<拱頂與拱頂構造>
........................................拱頂
............................................複式拱
............................................簡式拱頂
............................................<依結構區分之拱頂>
........................................<拱頂構造>
|||............................................穹稜 (拱頂構造)
|||............................................穹頂隔間
|||............................................拱頂狀柱頭
|||............................................拱頂隔間
............................................穹窿拱腳橫帶
|||....................................隔間柱