stable density gradient 中文意思是什麼

stable density gradient 解釋
穩定密度梯度
  • stable : adj 1 穩定的；安定的；固定的。2 意志堅定的，有恆心的。adv bly ness n n 1 廄，馬廄，馬棚；〈罕用語...
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  • gradient : adj. 1. 傾斜的。2. 【動物；動物學】步行的，能步行的。n. 1. 〈英國〉（道路的）傾斜度，坡度，坡路。2. 【物理學】梯度，陡度，（溫度、氣壓等的）變化率，梯度變化曲線。
  1. On the basis of analyzing factor ( soil particle composition, soil bulk density, water stable aggregate content, antecedent soil moisture, slope gradient, rain intensity, accumulation depth and soil crust, soil and water conservation tillage measures ) affecting soil infiltration rates, several relation models was obtained ; analyzed in detail different soil and water conservation tillage measures intensifying infiltration rates, while there have the same rainfall condition, the increasing infiltration rates of contour tillage and artificial digging and artificial hoeing in gully areas of loess plateau are 67 % and 41 % and 29 % ; the increasing infiltration rates in hilly areas of loess plateau is 45 % and 22 % and 14 %

    在相同的降雨條件下，黃土高原溝壑區等高耕作與直線坡相比，可提高入滲67 ，人工掏挖可提高入滲41 ，人工鋤耕可提高入滲29 ；黃土丘陵溝壑區等高耕作可提高入滲45 ，人工掏挖可提高入滲22 ，人工鋤耕可提高入滲14 。並根據黃土高原超滲產流的概念和水量平衡方程，建立了不同水土保持耕作措施強化入滲速率模型。
  2. Possible geometrical structures and relative stability of semiconductor microclusters ganpn ( n = 1 - 5 ) are studied by using density functional calculations with generalized gradient approximation ( b3lyp ). for the most stable isomers of ganpn ( n = 1 - 4 ) clusters, the electronic structures, vibrational properties, dipole moments, polarizability and ionization potential are analyzed using hf, mp2, cisd and b3lyp methods with different basis sets

    用梯度修正的密度泛函方法（ b3lyp 6 - 31g ）優化了ga _ np _ n （ n = 1 - 5 ）團簇的可能幾何構型，計算了各穩定構型的的振動光譜，並用不同方法（ hf 、 mp2 、 cisd等）研究了各穩定構型的電子結構、電離勢、偶極矩和極化率等性質。
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