仑琴射线 lúnqínshèxiàn X-ray Definitions Defs Origin Strokes Stroke Words Sentences Sents 仑琴 侖琴 lúnqín roentgen (variant form) roentgen, a unit of ionizing radiation; Wilhelm Conrad Röntgen (1845-1923), German physicist射线 射線 shèxiàn noun ray (physics) A stream of high-energy particles or electromagnetic waves, such as X-rays or alpha rays.
