英语词汇“yolk-sac placenta”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	yolk-sac placenta
释义	yolk-sac placenta noun : a structure in some sharks resembling a placenta, consisting of the vascular embryonic yolk sac wall intimately associated with the vascular maternal uterine or oviducal wall, and serving to nourish the embryo
随便看	vasoconstricting vasoconstriction vasoconstrictive vasoconstrictor vasocorona vasodentin vasodepressor vasodilatation vasodilatin vasodilating vasodilation vasodilator vasoexcitor vasofactive vasoformative vasoganglion vasoinhibitor vasoinhibitory vasoligation vasomotion vasomotor vasomotor vasomotor rhinitis vasoneurosis vasoneurotic

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