...分析了使用三阶Runge-Kutta方法数值求解的Duffing方程的性质和圆柱绕流尾流特性,分解得到了有限阶 经验模态 ( Empirical Modes ),给出了相应的Hilbert谱。
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Combined with the results of empirical dispatching modes in Guangzhou City, the change law as well as its internal and external factors of water consumption is analyzed from the macroscopic viewpoint.
结合广州市部分经验调度工况的结果,从宏观角度分析广州市的用水量变化规律及其影响这种变化规律的内在因素和外在因素。
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