| 单词 | x-ray astronomy |
| 释义 | > as lemmasX-ray astronomy X-ray astronomy n. the branch of astronomy concerned with the X-ray emissions of celestial objects. ΘΚΠ the world > the universe > cosmology > astronomy > [noun] > X-ray astronomy X-ray astronomy1959 1959 New Scientist 21 May 1117/1 We can begin to develop ultra-violet astronomy, X-ray astronomy and so on. 1970 Sci. Jrnl. May 17/4 It is some years since the accidental discovery of the X-ray source Sco X-1 ushered in the new field of X-ray astronomy. 2002 Philos. Trans. (Royal Soc.) A. 360 2092 The under-acknowledged role of X-ray astronomy in defining the cosmological world model to which we have been led. < as lemmas |
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