单词 radioactivity 释义 radioactivityAlso with hyphen.[f. radio- 2 + activity.]1. a. The property or condition of being radioactive; (the field of study concerned with) the phenomena displayed by radioactive materials. Hence, the radiation emitted by a r...
单词 radioactivity 释义 radioactivity n[U]. 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。 ...