globular

globular completeness

完全无缺

There are 5 stages during the development of embryo, including the stage of 2-celled proembryo, multicellular proembryo, globular proembryo, pyriform proembryo, differential embryo and mature embryo.

胚胎发育经过二细胞原胚、多细胞原胚、球原胚、梨原胚、分化胚和熟胚阶段。

We also describe the basic principle of white dwarf cosmochronology and its application in defining the age of the Galactic disk, globular clusters, open clusters and Galactic halo.

介绍了白矮星宇宙纪年基本原理及其在银盘、球状星团、疏散星团以及银晕年龄确定方面应现状。