The osmotic gas beneficiation on another surface of films and diffusion in the air.

渗透气体在膜的另一表面上富集，并向空气扩散。

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It also helps diffusion, the way a scent lifts and hangs in the air.

香柠檬油同时也有助于香味的扩散，即香味弥漫并悬浮在空气中的方式。

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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 density of water molecules within the leaf is typically 60 times greater than the density of carbon dioxide in the air, and the diffusion rate of the water molecule is greater than that of the carbon-dioxide molecule.

WSJ: Harrison H. Schmitt and William Happer: In Defense of Carbon Dioxide