| 释义 |
胚层pēicéng人或高等动物的胚胎,由于细胞的迅速分裂,胚胎体内的细胞不断增加,于是分裂为三层,即外胚层、中胚层和内胚层,总称胚层。{germinal layers; referring to ectoderm, mesoderm and entoderm, the three cell layers resulting from the rapid breakup of cells and the constant increase in the number of cells within the human or higher-animal embryo;}也叫also胚叶{pēiyè}。 |