radioactive isotopes

ra·di·o·ac·tive i·so·topes

(rā'dē-ō-ak'tiv ī'sŏ-tōps) Isotopes with an unstable nuclear composition; such nuclei decompose spontaneously by emission of a nuclear electron (β particle) or helium nucleus (α particle) and radiation (γ rays), thus achieving a stable nuclear composition; used as tracers, and as radiation and energy sources.
See also: half-life

ra·di·o·ac·tive i·so·topes

(rā'dē-ō-ak'tiv ī'sŏ-tōps) An isotope with an unstable nuclear composition; used as tracers, and as radiation and energy sources.

单词	radioactive isotopes
释义	DictionarySeeradionuclide radioactive isotopes ra·di·o·ac·tive i·so·topes (rā'dē-ō-ak'tiv ī'sŏ-tōps) Isotopes with an unstable nuclear composition; such nuclei decompose spontaneously by emission of a nuclear electron (β particle) or helium nucleus (α particle) and radiation (γ rays), thus achieving a stable nuclear composition; used as tracers, and as radiation and energy sources. See also: half-life ra·di·o·ac·tive i·so·topes (rā'dē-ō-ak'tiv ī'sŏ-tōps) An isotope with an unstable nuclear composition; used as tracers, and as radiation and energy sources.
随便看	non-public funds accounting non-public funds accounting officer nonpublic information nonpublic knowledge non-publicly accountable enterprise nonpublicly traded reit non-public money account non-public personal information nonpublic personal member information nonpublic postsecondary education commission nonpublic record nonpublic records non public release nonpublished non published area non-published number nonpuerperal galactorrhoea-amenorrhoea non-pumping non-pumping (static) water level non-punitive non-punitive letters of caution nonpurgable organic carbon non-purgeable organic halide non-purgeable total organic carbon nonpurpose loan