fr

英 美
  • abbr.故障率(=failurerate)abbr.故障记录(=faillurerecord)abbr.故障报告(=failurereport)
  • fr abbr.故障率(=failurerate)abbr.故障记录(=faillurerecord)abbr.故障报告(=failurereport)
  • FR-NB n.段号
  • Fr-number 弗劳德数
  • Fr.Gu. abbr.=FrenchGuiana法属圭亚那
  • fra n.兄弟(对意大利和尚或托钵僧的称呼)abbr.(美国)联邦铁路局(=FederalRailroadAdministration)abbr.(美国)联邦储备法(=FederalReserveAct)
Noun:
  1. a radioactive element of the alkali-metal group discovered as a disintegration product of actinium