embryonic sac
英 [ˌembriˈɒnɪk sæk]
美 [ˌembriˈɑːnɪk sæk]
胚囊
双语例句
- Effects on embryonic development and ultramicrostructure of visceral yolk sac induced by ethanol
乙醇对胚胎发育与卵黄囊超微结构的影响 - Early when tile embryo sac was in 2-nucleate or 4-nucleate stage, initial cells of the adventitious embryos started division, and then developed into embryonic structures of multiple cells while the embryo sac was in 8-nucleate stage.
不定胚起始细胞启动分裂时，胚囊发育至2核或4核时期，8核胚囊时期，胚珠内已形成多细胞不定胚结构。 - With the development of the embryo, the HG with monolayered cells was still distributed on the outer surface of embryonic body and yolk sac. At the same time, the number and the volume of HGCs increased significantly, HGCs spread more widely.
随着胚胎的发育，HG进一步成熟，但仍以单层细胞分布于胚体和卵黄囊外表面，此时，HGCs数量急剧增多，细胞体积有所增大，分布范围更加广泛。