Bilateral oal thickenings of the surface ectoderm, called nasal placodes, then deelop on each side of the inferior part of the frontonasal prominence.
外胚层表面呈双边卵圆形增厚形鼻板,然后发
额鼻隆起的下半部分。
Bilateral oal thickenings of the surface ectoderm, called nasal placodes, then deelop on each side of the inferior part of the frontonasal prominence.
外胚层表面呈双边卵圆形增厚形鼻板,然后发
额鼻隆起的下半部分。
明:以上例句、词性分类
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