单词 | non-radioactive |
释义 | > as lemmasnon-radioactive non-radioactive adj. Brit. /ˌnɒnreɪdɪəʊˈaktɪv/ , U.S. /ˌnɑnˌreɪdioʊˈæktɪv/ not radioactive; not involving the use of radioactive substances.ΚΠ 1904 E. Rutherford Radio-activity 397/2 Preparation of non-radio-active thorium. 1937 Discovery Apr. 127/1 An isotope of a non-radioactive element. 1978 J. A. Maxwell America's Fascinating Indian Heritage i. 19/1 At death, the intake of C-14 ceases and the accumulated supply in the body begins to break down into nonradioactive carbon. 1993 Ann. Human Genetics 57 1 A 317-bp segment of DNA from the 3′ region..has been examined by a non-radioactive technique. < as lemmas |
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