Ionium Mare伊奥尼亚海
ionium age锾年龄;钍年积;镭年积
Ionium Records出版者
ionium-thorium dating鑀
ionium age dating method鑀法
uranium-ionium dating铀鑀定年
ionium dating method锾法
ionium-radium geochronology鑀–镭地质年代学
uranium-ionium geochronology地质年代学;铀
N(名词) a naturally occurring radioisotope of thorium with a mass number of 230 锾 ( symbol: Io) [OBSOLETE]