The temperature gradient of the heating mass-exchange boundary layer is smaller than that of the pure convective heat-exchange boundary layer.
热质交换边界层的温度梯度小于纯对流热交换边界层的温度梯度；
The temperature gradient of the heating mass-exchange boundary layer is smaller than that of the pure convective heat-exchange boundary layer.
热质交换边界层的温度梯度小于纯对流热交换边界层的温度梯度；
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