The tubular reactor of Daqing naphtha pyrolyzer is simulated by a two-dimensional model.

对大庆石脑油裂解炉反应管用二维模型进行数学模拟。

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With the above assumptions made, adequate analysis can be performed using a two-dimensional model.

基于上面假定， 可以采用二维模型完成下面的分析。

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For example, in a two-dimensional model, the possible values for each position are: up, down, left, and right.

例如，在一个二维的模型中，每一个位置的可能值是：上、下、左、右。

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