研究了与灰体辐射场相互作用的J-C模型中场的线性熵的演化规律，讨论了腔体吸收系数、入射场的光子数分布、热场的平均光子数对场的线性熵的影响。
The evolutional rules of linear entropy of field in the model of Jaynes-Cumming(JC) that acts each other with radiation field of a grey body are studied.
分析气体辐射常用的三种模型：灰体模型、窄谱带模型和宽谱带模型的适用性，以及这三种模型的常规使用方法。
The dissertation analyses the applicability of three models of gas radiation computation: the gray model, the narrow band model and the wide band model, and analyses the normal method of using them.
从辐射全交换面积的概念出发，推导了封闭空间边界为灰体，介质为非灰气体的辐射全交换面积计算式。
Based on the original conception of total radiant exchange area, the total radiant exchange areas for non-gray medium with gray enclosure are derived.
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