词族 · francium
词形变化
中文词源
francium 钫
来自法国上世纪核物理学家Marguerite Catherine Perey以其祖国命名的化学元素。
英语词源
- francium (n.)
- radioactive element, 1946, named by French physicist Marguerite Catherine Perey (1909-1975) who first identified it at the Curie Institute in Paris, from Latinized form of France + element ending -ium.
权威例句
- 1. The half - life of francium is 22 minutes.
- 钫的半衰期是22分钟.
- 2. Francium is the densest of the Alkali Metals and also radioactive.
- 钫是碱金属中密度最大的,具有放射性.
- 3. Even Francium's most stable isotope, Francium - 223 only has a half - life of 22 minutes.
- 钫的最稳定的同位素, 钫 -223 也只有22分钟的半衰期.