“sphenopsida”的概念、定义、翻译、参考文献-科学参考

单词	sphenopsida
释义	sphenopsida Encyclopedia 理学楔叶纲释 sphenopsida楔叶纲蕨类植物门一纲。一类古老的原始维管植物。这一类群的植物以茎部具节为特征，故又称有节类或节蕨纲。
随便看	hydrogen burning hydrogen cell hydrogen chloride hydrogen clock hydrogen cloud hydrogen coal process hydrogen content hydrogen convection layer hydrogen conversion hydrogen coolant hydrogen corona hydrogen cyanide hydrogen cycle hydrogen-deficient carbon star hydrogen-deficient donor hydrogen-deficient star hydrogen dispenser hydrogen distribution hydrogen economy hydrogen electric generation hydrogen-electric generation hydrogen electrode hydrogen embrittlement hydrogen emission region hydrogen energy

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