A cannula has to be inserted into a leg vein.必须应用小腿的静脉放置导管.One of the best areas for the cannula is the cephalic vein in the shoulder area.肩部的头静脉是放置静脉导管最好的部位之一.Objective : To summarize the clinical application of permane...
大多数黄土被认为是一种风成沉积.Most loess is considered to be an eolian deposit.被称为黄土的风成沉积物,在许多地区均有.Wind - deposited sediment called loess occurs in many places.表面上很少显示出风成沙波纹或风成细砾波纹.The surface rarely shows such features as wind ripple...
...a filter that can cut dazzle.可以去除眩光的滤光片For all its dazzle --- or perhaps because of it -- molecular anthropology is not without critics.或许正因如此,对这一切谜团, 分子人类学受到了批评.Basketball fans miss Magic Johnson's razzle - dazz...