单词	para-hydrogen
释义	para-hydrogen noun ¦parə+ : molecular hydrogen in which the two hydrogen nuclei are spinning in opposite directions so that their contribution to the total angular momentum is zero compare ortho-hydrogen Word History Etymology para- entry 1 + hydrogen
随便看	sapphicer sapphicest sapphics sapphire sapphire gurnard sapphire quartz sapphireberry sapphirer sapphires sapphirest sapphirewing sapphiric sapphirine sapphirine gurnard sapphirines sapphism sapphisms sapphists Sappho sapphoes sapphos sappier sappiest sappiness sappinesses

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