A numerical model for turbulent fluctuation and diffusionofgas-particle flows is presented.
本文提出了气固两相流动的湍流扩散数学模型。
2
At the same time, carbon dioxide is removed from the blood through the same process ofdiffusion. This waste gas is expelled as we breathe out.
同时，血液中的二氧化碳经过同一个扩散过程被排除，并随着我们的呼气而排出体外。
3
Combining several techniques enables researchers to measure the rate ofdiffusionof these helium gas molecules, which reflect the size of the air sacs in the lung.