现在一般用气孔导度（stomatic conductance）表示，其单位为mmol/m2/s，也有用气孔阻力（stomatic resistance）表示的，它们都是描述
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The best regression models (e. g. Ulmus pumila) of leaf content against air SO2 and leaf stomatic resistance could explain that the sulfur acted as pollutant entered plant mainly through stoma.
植物叶片硫含量与大气SO2和气孔阻力的回归模型说明，以污染状态进入植物体的硫，主要通过气孔进入；
The resistance of stomatic diffusion, evapotranspiration rate and daily progress of water potential in leaves of the four kinds of crops were determined at the same time in their heading stages.
在四种作物的抽穗期同时测定其气孔扩散阻力、蒸腾速率与叶水势日变化。
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