基于稀溶液蒸气压下降理论分析了盐化物降低路表雨雪冰点的作用机理，分析了不同类型盐化物沥青路面自融雪的作用过程。
The mechanism of reducing the freezing temperature of water is explained based on the vapor pressure drop theory . The melting processes of asphalt pavement with different kinds of snow melt salt are analyzed .
蒸气压下降