roentgenium 

  1. 名詞
不可數名詞: 錀

    
                        
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例句

                

                    
    
                                                    
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                                Roentgenium                            
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                                add Roentgenium compounds here                            
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                                And just last month three new elements were christened : Darmstadtium, Roentgenium , Copernicium.                            
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                                As exciting as those unpronounceable element names sound,(Darmstadtium, Roentgenium , Copernicium.                            
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                                The ten are lawrencium, rutherfordium, dubnium, seaborgium, bohrium, hassium, meitnerium darmstadtium, roentgenium and copernicium.                            
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