单词 radon 释义 radon Chem.|redn|[a. G. radon (C. Schmidt 1918, in Zeitschr. f. Anorg. Chem. CIII. 114): see radium and -on2.]1. A short-lived radioactive element which belongs to the group of noble gases and occurs naturally in trace amounts as a result...
单词 radon 释义 radon n[U] chemical element, a radioactive gas produced by the decay of radium 氡. =>App 10 见附录10. 英汉双解词典包含38652条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。 ...