francium是什么意思?

n.
(放射性元素)钫(符Fr)

相关问题
  • francium的音标

    francium的音标:francium的英式发音音标为:['frænsiəm]francium的美式发音音标为:['frænsiəm]...
  • francium例句

    The half - life of francium is 22 minutes.钫的半衰期是22分钟.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.Even Francium's most stable isotope, Francium - 223 only has a half - life of ...