hydrogen 

  1. 名詞
不可數名詞: 氫

    
                        
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例句

                

                    
    
                                                    
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                                Hydrogen peroxide sterilizers have their drawbacks.                            
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  2. 
                                Who needs hydrogen at the sources of hemicellulose ?                            
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                                We also recommend some hydrogen cell companies below.                            
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                                Hydrogen can be stored in natural gas pipeline networks.                            
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                                Ozone and hydrogen peroxide are virucidal (virus-killing).                            
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