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radioactive 音标拼音: [r,edio'æktɪv] a. 放射性的,有放射能的 放射性的,有放射能的 radioactive adj 1: exhibiting or caused by radioactivity; "radioactive isotope"; "radioactive decay"; "radioactive fallout" [ant: {nonradioactive}] radioactive \ra`di*o*ac"tive\ (r[=a]`d[i^]*[-o]*[a^]k"t[i^]v), a. [Radio- active.] 1. (Physics) Capable of luminescence under the action of cathode rays, X rays, or any of the allied forms of radiation. [obsolete] [Webster 1913 Suppl.] 2. (Physics) of, exhibiting, or caused by {radioactivity}. [PJC] radioaktiv[Adjective]
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