The evaporation velocity could be calculated by the evaporating volume during unit time.
或通过对液滴图像几何尺寸的计算,得到单位时间内液滴的变化量,进而得到液滴的蒸发速率。
参考来源 - 基于PC机的蒸发液滴图像反馈控制系统·2,447,543篇论文数据，部分数据来源于NoteExpress
The mass transfer equation was introduced into heat transfer model of falling film evaporation. The radial velocity, mass diffusion coefficient and variation of film thickness were taken into account.
将传质方程引入到垂直管降膜蒸发传热模型中，求解时考虑了径向速度、质量扩散系数和膜厚变化对传热的影响。
By indoor and field simulated experiments of infiltration and evaporation of the rainwater, the paper studies the depth and velocity of infiltration and the daily evaporation.
通过室内和野外模拟降雨的入渗和蒸发实验，研究不同降雨量条件下，沙地的最大入渗深度、入渗速率以及每天的蒸发量。
The rate of water evaporation, shrinkage strain and the area of cracks increase with increasing exposure temperature and wind velocity, and with decreasing relative humidity.
混凝土的水蒸发速率、收缩变形、开裂面积都随着环境温度和风速的增加而增大，随着相对湿度的升高而降低；
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