critical-point drying method(临界点干燥)
制作电子显微镜干燥标本的一种方法。将标本用低临界温度液体(如液态CO2)替换水,再升温超过临界温度。如此处理的标本,可减小表面张力,保持样品自然状态的形貌。
Project selection methods involve measuring value or attractiveness to the project owner or sponsor and may include other organizational decision criteria ()is not a project selection method.
免费的网站请分享给朋友吧