“cotton pygmy goose”的概念、定义、翻译、参考文献-科学参考

单词	cotton pygmy goose
释义	cotton pygmy goose Encyclopedia 理学鸟纲释 cotton pygmy goose棉凫雁形目鸭科鹊鸭属的一种。又称棉花小鸭、小白鸭子、八鸭。
随便看	sigma electron sigma field sigma-field sigma field of events sigma-field of events sigma-field of sets sigma field prior to tau sigma-field prior to tau sigma-field prior to τ sigma-field strictly prior to τ sigma-finite sigma finite measure sigma-finite measure sigma-finite measure space sigma formyl complex sigma-formyl complex sigma-function sigma-group Sigma hypernucleus sigma hypernucleus Sigma hyperon sigma hyperon sigma-ideal Sigma index method sigma-locally finite family

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