['reidɔn] 名词

Radon n (a chemical element); Emanation f (a chemical element); Em f (a chemical element); Niton n (a chemical element); Nt m (a chemical element); Radon-222; Radium-Emanation f; ²²²Rn

radon A radioactive gaseous element emitted naturally from rocks and minerals where radioactive elements are present. It is released in non-coal mines, e.g. tin, iron, fluorspar, uranium. Radon is an alpha particle emitter as are its decay products and has been indicted as a cause of excessive occurrence of lung cancer in uranium miners. Concern has been expressed at radon levels in some housing usually adjacent to granite rocks or old tin mining regions ['reidɔn] 名词

环境

Radon n

英语词库

Radon ['reɪdɒn, -dɑːn] 缩写

RADON ['reidɔn] 名词

radon

: 36 短语, 16 学科

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