It was found that the shape of absorption signal was controlled by the property of the analyte, the sample vaporization rate and the gas diffusion rate.

结果表明，吸收信号形状由被测元素的性质、样品气化速率和原子蒸气扩散速率决定。

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Combining several techniques enables researchers to measure the rate of diffusion of these helium gas molecules, which reflect the size of the air sacs in the lung.

联合其他的仪器研究者能够测量出氦气分子的扩散率，这将反映出肺中肺泡的大小。

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The gasification reaction rate would reduce because ash would melt, which will plug the coal surface pores and increase gas diffusion resistance.

高温下煤灰发生熔融，将会堵塞煤焦表面孔隙，增大气体扩散阻力，降低气化反应速率。

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