通过分析生物质热解过程的传热传质特点，建立了生物质燃料层热解过程的传热传质数学模型。
A mathematical model for the heat and mass transfer in the pyrolysis process of the biomass fuel bed was developed in this paper. Heat and mass transfer characteristics of the process were discussed.
通过数值模拟，得出了燃料层热解过程中的温度场的分布、层内固体密度的变化以及气体的生成规律。
The temperature distribution, density and gas yield of the biomass fuel bed were obtained by numerical simulation.
主要的问题在于这些盐中又多少还溶于水中，又有多少现在在铀燃料棒表面形成了一层外壳。
The big question is how much of that salt is still mixed with water and how much now forms a crust on the uranium fuel rods.
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