Radioactivity
01
放射性
the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei in radioactive substances
语法信息
有生性状态
抽象
形态构成
复合词
不可数
例子
The phenomenon of radioactivity was discovered by Henri Becquerel while studying the properties of uranium salts.
放射性现象是亨利·贝克勒尔在研究铀盐性质时发现的。
