complex gradient 中文意思是什麼
complex gradient
解釋
復合梯度-
When other factors are unchangeable, with the growing of the diameter of drip line and the distance of emitters, irrigation uniformity of trickle system is increasing. the face gradient of little irrigation district has complex effect on irrigation uniformity. in a word, we tries our best to make the face of little irrigation district flat in order to improve the quality of drip - irrigation system
灌水均勻度由某一因素決定，而其它因素不變的條件下，隨管徑增大，滴灌系統的灌水均勻度增大；隨滴頭間距增大，灌水均勻度也在增大；地形坡度對灌水均勻度影響比較復雜，為了提高低壓滴灌的灌水質量，土地必須整平。 -
In the summer stratified water column, the deeper the maximum depth of food distribution is, the stronger the dvm is performed ; the increase of the gradient of temperature in the thermocline layer can decrease the magnitude of the dvm and form the thermal barricade to the copepod ; the effects of the predation pressure on dvm is complex. on the one hand, the variations in the distribution depth of the predation pressure vs. the thermocline layer or the depth of the maximum food can modify the dvm patterns of the copepod. on the other hand, different predation pressure induces different dvm patterns
在夏季分層水體中，食物的最大分佈深度越大，動物向下遷移的幅度也越大；溫躍層的溫度梯度增大可以減小動物遷移的幅度，成為橈足類垂直遷移的溫度屏障；捕食壓力對垂直遷移的影響較復雜，一方面，捕食壓力的分佈深度與溫躍層或食物峰值的相對位置的變化能夠改變橈足類垂直遷移的模式，另一方面，捕食壓力強度不同，橈足類垂直遷移的幅度也不同，捕食壓力越大，遷移的幅度越大，當捕食壓力增加到一定程度，橈足類停止向上的遷移，大部分時間呆在水體深層，可能進入捕食壓力引起的「滯育」狀態。 -
Because of the highly variable topological and hydrodynamic condifitions at a strait, the distribution of sediment is complex, with a large gradient in grain size parameters
海峽地區由於地形和水動力條件多變，沉積物分佈的空間梯度大，有利於揭示不同搬運機制的作用和影響以及評價區域性和局部性的影響。 -
2. as for the structural analysis and numerical simulation of a complex problem with high gradient, an idea was proposed, i. e. if the displacement field could be constructed by using both bezier - based function and the mobile middle node ? according to this strategy, a new coupling method, called as bezier - based element method ( bbem, for short ), was proposed and studied in detail
2 .就具有高梯度問題的復雜結構分析與數值模擬，提出了基於bezier函數來構造帶有移動節點的位移場函數的思路，研究並建立了基於bezier函數的移動節點單元法的基本原理，構建了常用的一維和二維bezier耦合單元和等參單元7種。 -
When using modem optimization methods, the gradient vector information of the target function is not necessary, so there is much flexible in solving complex optimization problems
使用現代優化技術時不需要目標函數的梯度向量，因此在解決復雜優化問題時有更大的靈活性。
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