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把描述非灰气体辐射特性的指数宽带模型引入段法，跟踪模拟各谱带的辐射能在段间的传递，然后合成整个光谱的辐射全交换面积．推导了各分量矩阵的求算以及总矩阵的合成．数值模拟结果表明，推导的求算非灰气体参与的段法辐射全交换面积的公式是正确的，该法在计算时间方面优于非灰气体参与的均匀离散射线法．
An exponential broadband model describing the radiation characteristics of non-gray gases is introduced into the segment method to track the transmission of radiant energy in each band and then to synthesize the full radiation exchange area of the entire spectrum. The calculation of each component matrix and the synthesis of total matrix are derived. The numerical simulation results show that the derivation of the formula for calculating the full exchange area of radiation by non-ash gas is correct. This method is superior to the uniform discrete radiometry with non-gray gas in the calculation time.