人じん工こう放ほう射しゃ能のう

noun

artificial radioactivity

Technical term used in nuclear physics and environmental science to refer to radioactivity induced by human activities, as opposed to natural background radiation.

• 原げん子し力りょく発はつ電でん所しょの事じ故こで人じん工こう放ほう射しゃ能のうが環かん境きょうに放ほう出しゅつされた。

  Artificial radioactivity was released into the environment due to the nuclear power plant accident.

• 人じん工こう放ほう射しゃ能のうと自し然ぜん放ほう射しゃ能のうの違ちがいを説せつ明めいしてください。

  Please explain the difference between artificial and natural radioactivity.