单词 | half-period |
释义 | > as lemmashalf-period half-period n. the half-life (half-life n.) of a substance; see also quot. 19041. ΚΠ 1904 G. F. Goodchild & C. F. Tweney Technol. & Sci. Dict. 277/2 The area included in this curve is the first half period element. 1904 G. F. Goodchild & C. F. Tweney Technol. & Sci. Dict. 277/2 The effect of the whole wave can be expressed in terms of these half period components. 1905 Nature 13 Apr. 574/1 Different samples gave for the half-period of decay from 52 to 55 seconds. 1942 J. D. Stranathan ‘Particles’ of Mod. Physics xi. 448 One product of the nuclear disruption was a Ba isotope having a half period of 86 minutes. < as lemmas |
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