在CVD过程中，存在着大的温度差和浓度差，将引发自然对流和浓度扩散，它们又与气体的强迫流动以及反应器的几何尺寸和形状相互影响。

Large temperature and concentration differences taking place in CVD process lead to natural convection and concentration diffusion which interact with forced convection and complex reactor geometries.

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在釜式反应器内研究了氯磺化反应的气固相反应机理，发现气体的内扩散和本征化学反应是氯磺化反应的控制步骤。

The gas-solid reaction mechanism was studied in the tank reactor. It was found that the reaction rate was controlled by the interdiffusion and intrinsic chemical reaction.

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一种循环管式反应器的扩散模型，归结为一类特殊的边值问题，其特点为两个端点的函数值出现在一个边界条件中。

Recycle tubular reactor model with axial dispersion leads to a special boundary value problem, in which one boundary condition involves the values at two end points.

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