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
........................<供暖與烹煮元素>
............................<壁爐與壁爐結構>
................................<壁爐結構>
....................................<爐床與爐床結構>
........................................爐床
|||............................................爐底石
........................................<爐床結構>
|||............................................壁爐背
|||............................................爐床前部
|||....................................爐灰坑