The main difference is the addition of a gradient to give it a fresher aesthetic.
主要变化是增加了色彩渐变，使得视觉上更加美观。
Distribution difference of the birds in the reserve occurred not only on level pattern but also on an altitudinal gradient.
保护区鸟类的分布，不仅在水平格局上存在一定的地域差异，而且在海拔梯度上也有明显的差异。
The finite difference method is used to solve the coupling model, and the influence of starting pressure gradient on the distribution of groundwater pollutant concentrations is analyzed.
采用有限差分法和混合有限分析法对耦合模型进行数值求解，并分析了启动压力梯度对地下水污染浓度的影响。
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