Terms containing external column

Subject	English	Chinese
tech.	external auxiliary column	外部辅助柱
tech.	external column	外部管柱
tech.	external column	外柱
tech.	external masonry wall column	圬工外墙柱
tech.	external prestressed column	外部预应力柱
tech.	external prestressed concrete column	外部预应力混凝土柱
tech.	external principal column	老檐柱
chem.	external reflux of column	分馏柱的外回流
tech.	external reflux of column	分馏柱外回流
tech.	external reinforced column	外部加强支柱
tech.	external walling column	外墙柱
tech.	external walling column	围墙柱