中文翻译与英英解释

X 线管。

x-ray:    n. X(射)线，伦琴射线；X光；X光照片。 adj. ...

tube:    n. 1.管，筒；颜料管。 2.管状地下隧道；〔口语〕( ...

An X-ray tube is a vacuum tube, that produces X-rays. They are used in X-ray machines.