| 单词 | active deposit |
| 释义 | > as lemmasactive deposit active deposit n. Physics a deposit of radioactive material formed by the decay of a radioactive gas or emanation (emanation n. 2c). ΘΚΠ the world > matter > physics > atomic nucleus > radioactive isotope > radioactive nuclide > [noun] > radioactive deposit active deposit1904 1904 E. Rutherford in London, Edinb., & Dublin Philos. Mag. 6th Ser. 8 636 For convenience, the products in the active deposit will be termed Radium A, Radium B and Radium C, respectively. 1936 N. Feather Introd. Nucl. Physics viii. 131 Sources of radon, radiothorium and thorium active deposit..emit positive as well as negative electrons. 2002 Atmospheric Environment 36 2800/1 Two radioactive gases, both emitted by soils, are also monitored..from measurements of short-lived daughters by the active deposit method. < as lemmas |
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