Because calculations and lab experiments replicating the Venusian surface and atmosphere show that emissivity decreases over time, emissivity can be an important indicator of a substance's age.
同时因为计算与实验室的实验复制的金星地表与大气层的活动，表明辐射率一直在下降，所以辐射率能够成为某个地质年代的一个重要指标。
The influence of the diameter of the absorber, wind speed and the emissivity of the absorber surface on the equilibrium temperature have been discussed.
讨论了吸收器直径、风速和吸收表面发射率对平衡温度的影响。
Theoretical calculations of the emissivity of material surface were shown that the emissivity of material surface decreases with the temperature increases.
通过理论计算推导出材料表面发射率随温度的变化趋势，结果表明，材料表面的发射率是随着温度的升高而降低。
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