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
........................<開口與開口結構>
............................開口
................................<依形式區分之開口>
....................................<通道與通道構造>
........................................<通道構造>
............................................<閘門與閘門構造>
................................................閘門
|||....................................................狗門
|||....................................................防洪閘 (低閘門)
|||....................................................停柩門
|||....................................................吊閘
|||....................................................水閘門 (水流調節構造)
................................................<閘門構造>
|||....................................................懸吊杆件
|||....................................................關門橫木
|||................................................三門