The air we breathe, the water we drink and the soil that grows our food are part of a delicate global ecosystem that is increasingly under pressure from human activities.
我们呼吸的空气，饮用的水，生长食物的土壤，是全球脆弱生态系统的一部分，这一系统所承受的人类活动的压力日益加大。
The magnitude and variation of air pressure entrapped in soil in the course of infiltration are measured by an installation developed by the author to investigate the resistance effect of air.
利用自制的入渗仪测定了土壤入渗过程中被禁锢的土壤空气压力大小及变化以研究禁锢土壤空气压力对非饱和土壤入渗水流的阻碍作用。
And flow of water and air simulated by numerical model of water-air two-phase flow could be used to quantitatively analyze the influence of air pressure on infiltration of water into soil.
采用水-气二相流模型模拟得到水相、气相的流动状态，为定量研究孔隙气压力对入渗水流的影响提供了有效途径。
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