radioisotope
(geology) A type of landslide characterized by falling rocks.
simple past tense and past participle of crossdress
(nautical, physics) The horizontal distance between the center of mass of a tilted vessel and the vertical line connecting its center of buoyancy and its metacentre (conventionally taken as positiv...
(physics) a radioactive isotope of an element
研究室では職員の被ばくを防ぐために、鉛張りの容器に放射性同位体を保管した。
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