Read Edit View history 胚层 pēicéng germ layer Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 胚层/胚層 · pēicéng · germ layer 2026/03/04 胚层 / 胚層 pēicéng germ layer a primary layer of cells formed during embryogenesis from which all tissues and organs develop 在胚胎发育过程中，细胞分化形成三个不同的胚层。 created sense Mar 4, 2026, 02:25 AM