The life cycle of maize is that of a typical angiosperm.玉米的生活史是被子植物中比较典型的.Other angiosperm cultures based on totipotent cells could be adapted to similar ends.其它用全能细胞的被子植物培养能够适合于类似的目的.Most angiosperm ovules possess two i...
在表面形成的小凹坑起到应力增高源的作用.The small pits that form on the surface act as stress raisers.目的探讨先天性耳前瘘管及先天性耳后小凹的发生部位 、 并发症及遗传规律.Objective To explore position, complications and genetic rule of the CPF and PHEP.目的探讨放大内镜下胃小凹的形态分类及其临...