本文提出用系统动力学的方法来研究森林资源消长，并为系统预测，建立和提供了一个县级森林资源消长模型和S、D、流程图。
D flow diagram that was built by means of system Dynamics, which is the developing and passing system of forest resources for a county.
本文运用非线性系统动力学方法，建立了技术人才预测和规划模型，并对其中的复杂动力学行为进行了探讨。
Using nonlinear SD techniques, a model of technician system is proposed for forecasting and planing. Some complicated dynamic behaviours in the model are discussed also.
采用计算流体动力学（CFD）模型预测某600MW电厂选择性催化还原法烟气脱硝系统不同设计情况下的流场状态。
The computation fluid dynamics(CFD) is used to predict the flow filed inside the selective catalytic reduction(SCR)system of a 600MW power plant.
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