The embryo lives in the amniotic cavity.胚胎在羊膜腔中发育。Amniocentesis is the removal of fluid from the amniotic sac.羊膜穿刺术是从羊膜囊抽取羊水的技术.Nursing methods of preserving and making of human amniotic membrane was introduced.并介绍人羊膜的制作...
高速 打孔机, 电火花机, 磨床, 车床等加工设备.High - speed drilling machine, electric discharge machines, grinders, lathes and other processing equipment.定位打孔机: 应用于打孔定位系统内的精密打孔机.Register punch: Precision punching device used in a punch regi...
“对不起，爱德华，”我说道，因为我把果酱洒在了桌布上。"Sorry Edward," I said, splattering the cloth with jam.千万注意里面的东西一点都不能洒出来。Utmost care must be taken not to spill any of the contents.月亮闪耀，田野上洒下幽幽的亮光。The moon shone, shedding a ghostly light on t...