The evaporation of raindrops falling below the cloudbase is an important physical process, especially under the condition of low relative humidity below cloudbase.

云下雨滴蒸发是雨滴下降过程中重要的物理过程，特别是当云下相对湿度较低时更为明显。

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A concise physical picture is furnished by chemical potential curve about the law of phase equilibrium, saturated vapour pressure of curved liquid surface, evaporation and condensation etc.

通过曲线描述，提供了关于相平衡、弯曲液面饱和蒸气压以及蒸发、凝结等规律比较直观的物理图像。

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Physical method, including thermal evaporation and magnetic sputtering, and chemical coating method are applied to prepare organic-inorganic composite chromotropic film.

用热蒸发和磁控溅射的物理镀膜方法和溶胶凝胶化学涂布的方法相结合制备了有机和无机复合纳米光学变色薄膜。

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