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英英字典: sr




Overview of noun sr

The noun sr has 2 senses


  • strontium, Sr, atomic number 38 -- (a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite)

  • steradian, sr -- (the unit of solid angle adopted under the Systeme International d'Unites)

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