胚外中胚层在妊娠的第6.5至7.0天之间通过原始条带迁移到推测的卵黄囊。
Extraembryonic mesoderm migrates through primitive streak to the presumptive yolk sac between days 6.5 and 7.0 of gestation.
除了有防止囊鼠的苗圃外，我们有两个受保护的大型地区，只需防止大型的动物，例如野猪。
In addition to the gopher-proof beds, we have two large areas protected only from large animals such as javelina.
目的观察双刀劈核法在小切口白内障囊外摘出术中应用的效果。
Objective To observe the clinical effect of two knives horizontal nucleus chopping on small incision extracapsular cataract extraction.
应用推荐