| 正面 | 5813.x-ray 英 ['eks'reɪ]美 ['ɛks're]     |
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| 背面 |      释义： 1、先入为主，先下手为强。vt. 用X光线检查vi. 使用X光n. 射线；射线照片adj. X光的；与X射线有关的 例句： 1. I had to go back for my checkup; they'd lost my X-rays.我得回去再做一次体检。他们把我的X光片弄丢了。 X-ray (n.)1896, X-rays, translation of German X-strahlen, from X, algebraic symbol for an unknown quantity, + Strahl (plural Strahlen) "beam, ray." Coined 1895 by German scientist Wilhelm Conrad Röntgen (1845-1923), who discovered them, to suggest that the exact nature of the rays was unknown. As a verb by 1899. Meaning "image made using X-rays" is from 1934, earlier in this sense was X-radiograph (1899)." |