water potential gradient中文什么意思

water: n. 1.水；雨水；露；〔常作 pl. 〕礦泉，溫泉； ...
potential: adj. 1.可能的；【語法】可能語氣的。 2.潛在的； ...
gradient: adj. 1.傾斜的。 2.【動物；動物學】步行的，能步 ...
gradient of potential: 電位梯度
potential gradient: 電勢勾配; 電勢梯度矢量; 電位差度; 電位梯度; 勢陡梯度; 勢梯度，位梯度; 位能梯度; 位勢梯度; 位梯度；勢梯度

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The phase change of soil moisture and inflation of the frozen moisture c ause the reduction of hydraulic conductivity by reducing the area of flow section and the aperture of soil pore space , increasing the capillary resisting force to soil moisture , and decreasing the water potential gradient because of the increasing of movement distances of soil water
導水率減小是凍結(jié)土壤入滲能力減小的根本原因，而土壤中液態(tài)水的相變是導水率減小的根源所在。土壤水分的相變及其膨脹通過減小土壤水分過水斷面面積和孔隙孔徑，增大阻力和由于增長運動距離而減小水勢梯度使凍結(jié)土壤的導水率降低。
When water in the soil or in the xylem is put under tension , due to the evaporation of water from a particular site ( which creates a water potential gradient in the direction of the evaporation ) , capillarity enables water to overcome the cohesive forces within the water and move against gravity in response to the water potential gradient
當土壤中或木質(zhì)部中的水受到張力作用時，由于特定部分水的蒸發(fā)（沿著蒸發(fā)方向形成水勢梯度），毛細現(xiàn)象可以使水克服水分子之間的內(nèi)聚力并同時沿著水勢梯度逆著重力作用移動。

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