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	Aprilian aprils apriorism apriorisms apriorist aprioristic aprioristically apriorists apriorities apriority Aprismo Aprista Aprocta apron apron conveyor apron feeder apron lining apron man apron piece apron stage apron string apron wall aproned aproning aprons

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