做过液体冷凝实验的人都知道，纯净的液体容易过冷；将较高温度时制备的饱和溶液缓慢冷却，常发生过饱和现象。为什么会发生这些现象呢？这其中蕴含着丰富的表面现象知识。固体多为晶体，而晶体的表面（晶面）多为平面，所以固—液界面或固—气界面理应是平的，特别当固相... Anyone who has experimented with liquid condensation knows that pure liquids tend to be supercooled; saturated solutions prepared at higher temperatures are slowly cooled and supersaturation often occurs. Why do these phenomena happen? This contains a wealth of knowledge of surface phenomena. Solid is mostly crystal, and the crystal surface (crystal surface) is mostly flat, so the solid-liquid interface or solid-gas interface should be flat, especially when the solid phase ...