| 单词 | radium source |
| 释义 | > as lemmasradium source radium source n. ΚΠ 1922 Mansfield (Ohio) News 5 Mar. 5/2 (heading) New radium source is found in Brazil. 1992 N.Y. Times 1 Dec. c1/6 Dr. Agnew did ‘grunt work’, as he puts it, using radium sources to make scientific measurements and getting a hefty radiation dose. < as lemmas |
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