放射性降下物|ほうしゃせいこうかぶつhoushaseikoukabutsu

Definitions
  1. nounradioactive fallout
    Strontium 90: One of the radioisotopes of strontium; part of radioactive fallout, harmful to human health.
Japanese definitions
  1. 核爆発かくばくはつや原子力げんしりょく事故じこで発生はっせいした放射性ほうしゃせい物質ぶっしつが、大気たいき中ちゅうを漂ただよって地上ちじょうに降り積ふりつもったもの。
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