protactinium 

  1. 名詞
不可數名詞: 鏷

    
                        
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例句

                

                    
    
                                                    
  1. 
                                The name was shortened to " Protactinium " in 1949.                            
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  2. 
                                Nearly all natural protactinium is protactinium-231.                            
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  3. 
                                Oxyhalides and oxysulfides of protactinium are known.                            
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  4. 
                                Other known protactinium ions include , , PaF3+, , , and .                            
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  5. 
                                Protactinium forms mixed binary oxides with various metals.                            
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