Finally, under the three-dimensional ECOM model, the Particle-tracing Method is applied to the numerical modeling of the Changjiang Estuary sewage diffusion.
最后，本文在三维ecom模型下把质点跟踪法应用到了对长江口污染物扩散的数值模拟中。
The structure is made up of cylinder model with three-dimensional diffusion, which upper and side surfaces can meet the gas at the same time to enlarge the area with gas.
该传感器敏感膜结构由离散的微型圆柱体单元三维式扩散模型组成，模型上表面和侧面同时接触被测气体，扩大了与被测气体的接触面积。
Lagrangian stochastic model and a three-dimensional wind field diagnostic model are used to reveal the characteristics of mesoscale atmospheric flow and diffusion over Huian area, Fujian province.
采用拉格朗日随机粒子扩散模式和三维风场诊断模式以及实际气象观测资料，模拟分析了福建惠安核电厂所在沿海地区的大气流动和气载污染物的中尺度扩散情况。
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