The four properties, vapour pressure lowering, freezing point depression, boiling elevation, and osmotic pressure, are known as the colligative properties of solutions. 溶液的这四个特性：蒸汽压下降、凝固点降低，沸点升高和渗透压，称为溶液的依数性。
That is what makes vapor pressure lowering a colligative property--it only depends on the number of dissolved solute particles. 这使得蒸气压降低1 colligative财产-它不仅取决于一些溶解溶质粒子。
There are several other properties of solutions, besides concentration and solubility, called colligative properties, that depend only on the number of solute particles, not on their identities. 还有其他一些性能的解决方案，除了浓度和溶解度，所谓colligative性质，即仅仅依靠数量的溶质粒子，而不是对他们的身份。colligative性质的，我们将研究的蒸气压降低，凝固点抑郁，沸点海拔和渗透压。
