两种液体既有互相溶解的倾向,也同时具有互相分离的侦向。那一方面占上风,温度和组成常为决定因素。这对于只能互相部分混溶的双液系是很明显的。因为它们的完全混溶,只限于临界温度以上或以下,以及双结线以外的组成。对于可以完全混溶的双液系,除理想溶液外,降低温度常能增强其分离倾向,削弱其混溶倾向。如果不是由于固相的出现,则这些系统也可以当温度下降到一定程度后,在一定的级成范围内分为两 Both liquids have a tendency to dissolve each other, and also have their own separation from each other. On the one hand that prevail, the temperature and composition are often the deciding factor. This is obvious for two-fluid systems that are only partially miscible with each other. Because of their complete miscibility, they are limited to temperatures above or below the critical temperature, as well as compositions other than double junction. For the two-liquid system can be completely miscible, in addition to the ideal solution, the lower temperature can often enhance its separation tendency, weaken the tendency of their miscibility. If not due to the presence of solid phase, these systems can also be when the temperature dropped to a certain extent, within a certain range into two