ionium 

  1. 名詞
不可數名詞: 鑀

    
                        
    2. 
                                            

                

            

            
            

                

                
例句

                

                    
    
                                                    
  1. 
                                However, the name ionium is still encountered for 230Th in the context of ionium-thorium dating.                            
    2. 
                                                    
  2. 
                                iONiUM writes "Today the new Blackberry Z30 was announced today (release coming in the next 'few weeks').                            
    3. 
                                                    
  3. 
                                A related method is ionium-thorium dating , which measures the ratio of ionium (thorium-230) to thorium-232 in ocean sediment.                            
    4. 
                                                    
  4. 
                                In this scheme, 227Th was named radioactinium (RdAc), 228Th radiothorium (RdTh), 230Th ionium (Io), 231Th uranium Y (UY), 232Th thorium (Th), and 234Th uranium X1 (UX1).                            
    5. 
                                                    
  5. 
                                Two radiometric dating methods involve thorium isotopes: uranium-thorium dating, involving the decay of 234U to 230Th ( ionium ), and ionium-thorium dating, which measures the ratio of 232Th to 230Th.                            
    6.