It is found that significant radial variations of cracking temperature and cracking reaction rate exist due to boundary layer near the inner wall.
但是管内近壁面处由于存在边界层，始终存在着明显的径向温差；近管壁处始终是裂解的高速率区，副反应也主要发生在管壁区。
It is found that significant radial variations of cracking temperature and cracking reaction rate exist due to boundary layer near the inner wall.
但是管内近壁面处由于存在边界层，始终存在着明显的径向温差；近管壁处始终是裂解的高速率区，副反应也主要发生在管壁区。
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