渗透浓度是用来比较溶液渗透压力的，定义为渗透活性物质（溶液中产生渗透效应的溶质粒子）的物质的量除以溶液的体积。
方法：测定34例脑卒中急性期病人血浆电解质和葡萄糖的渗透浓度，计算同期甘露醇用量总数。
Methods:To measure the plasma osmolality of electrolytes and that of blood sugar in 34 patients with acute stroke. The total amount of mannitol given was calculated simultaneously.
渗透是一种自然现象：水通过半透膜，从低溶质浓度一侧到高溶质浓度一侧，直到溶剂化学位达到平衡。
Osmosis is a natural phenomenon of water through the membrane to high solute concentration from low solute concentration on one side, until the solvent chemical potential balance.
泡沫的流动阻力受泡沫剂浓度、温度、油饱和度、渗透率以及水相和气相达西流速的影响。
The flow resistance of foam is affected by those parameters such as surfactant concentration, oil saturation, temperature, permeability, water and gas phase velocity, etc.
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