【医】 外耳

（先天性）闭锁，无孔正常的身体孔或管道，如肛门、肠或外耳道的缺失或闭合

external diameter

cover for reexport and external transactions【贸易】 保险

internal-external upset tubing【油气】

external application

external angle to cove skirting

examination of external eye

external lamina

continuous negative external pressure