Fr

abbr.

法郎(franc)；[化]元素钫(francium)的符号；

英英释义

Fr

• n.a radioactive element of the alkali-metal group discovered as a disintegration product of actinium

  同义词：franciumatomic number 87

权威例句

Phylogeny.fr: robust phylogenetic analysis for the non-specialist.
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