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中文摘要：
采用Mach-Zehnder数字实时激光全息干涉法流体质扩散系数实验系统,对常压下温度范围为278.15～338.15K内空气在不同配比的碳酸二乙酯-正庚烷、乙醇正庚烷混合物中的质扩散系数进行了实验测量。同时,依据实验数据建立了质扩散系数与碳酸二乙酯-正庚烷、乙醇-正庚烷混合物质量分数和温度的关联式。
英文摘要：
A real-time digital holographic interferometry system for mass diffusion coefficients of fluid was constructed based on the Mach-Zehnder interferometry principle.Mass diffusion coefficients of air in binary mixtures（diethyl carbonate＋n-heptane,ethanol＋n-heptane）with different mass fraction under the atmospheric pressure and temperature rang T=278.15～338.15 K were measured with the experimental system.Based on the experimental data,the correlation of mass diffusion coefficients with mass fraction and temperature of the binary mixtures（diethyl carbonate＋n-heptane,ethanol ＋n-heptane）was established.
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