“germ-layer theory”的概念、定义、翻译、参考文献-科学参考

单词	germ-layer theory
释义	germ-layer theory [`jǝrm ´lā·ǝr ´thē·ǝ·rē] ^EMBRYOLOGY The theory that three primary germ layers, ectoderm, mesoderm, and endoderm, are established in the early embryo and all organs and structures are derived from a specific germ layer.
随便看	vagus Vaisala comparator valais wind valence valence angle valence band valence bond valence-bond method valence-bond resonance method valence-bond theory valence crystal valence electron valence number valence shell valence transition valencianite valency effect valentinite valeral valeramide valerianic acid valerian oil valeric acid valid validation

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