rubidium 

  1. 名詞
不可數名詞: 銣

    
                        
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例句

                

                    
    
                                                    
  1. 
                                The Hopi water is rich in Rubidium and potassium.                            
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  2. 
                                Rubidium and caesium are often used in atomic clocks.                            
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  3. 
                                Later rubidium beam and cesium beam clocks were used.                            
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  4. 
                                Rubidium is a very soft, ductile, silvery-white metal.                            
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  5. 
                                Rubidium is present as a minor component in lepidolite.                            
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