“primitive cardiovascular system”的概念、定义、翻译、参考文献-科学参考

单词	primitive cardiovascular system
释义	primitive cardiovascular system Encyclopedia 医学心血管系统的发生释 primitive cardiovascular system原始心血管系统人胚第3～5周，胚体内逐渐形成心管、动脉和静脉，构成卵黄循环、脐循环和胚体循环组成的系统。
随便看	radius of a sphere radius of beam waist radius of convergence radius of convexity radius of curvature radius of curvature in meridian radius of curvature in prime vertical radius of gyration radius of holomorphy radius of influence radius of inversion radius of meromorphy radius of molecular action sphere radius of normal curvature radius of nuclear charge radius of nuclear interaction radius of principal curvature radius of rotation radius of service radius of shadow radius of torsion radius of univalence radius of universe radius of well flow influence Radius protocol

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