cd.
n. a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores 同义词：cadmiumCdatomic number 48
the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin 同义词：candlecandelacdstandard candle
a debt instrument issued by a bank; usually pays interest 同义词：certificate of depositCD
a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser 同义词：compact diskcompact discCD
adj.being one hundred more than three hundred 同义词：four hundred400cd