资料来源 : pyDict

帧中继

资料来源 : WordNet®

Fr
     n : a radioactive element of the alkali-metal group discovered
         as a disintegration product of actinium [syn: {francium},
          {atomic number 87}]

资料来源 : Free On-Line Dictionary of Computing

fr
     
         The {country code} for France.
     
        (1999-01-27)