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黑体筒封闭法测定比辐射率的方法大大简化了比辐射率的测量及计算过程； 针对这种方法，分析了目标物体、环境的出射辐照度的波动对比辐射率精确测定的影响，讨论了不同辐射计滤光波段对计算的影响；并根据大量的实验给出冷热环境温差的优化值。最后给出了对比辐射率精确测定具有指导意义的３ 个结论。
The method of measuring specific emissivity with the blackbody cartridge sealing method greatly simplifies the measurement and calculation of emissivity. In this method, the influence of the emissivity fluctuation of the target object and the environment on the accurate determination of emissivity is discussed. Different radiometers filter the impact of the band; and based on a large number of experiments to give the optimal value of the temperature difference between hot and cold environments. Finally, three conclusions are given that can guide the precise measurement of emissivity.