应用灰箱辨识软件对车辆系统的灰箱模型辨识进行了仿真研究和实验室试验验证，证明了所提出方案是可行和有效的。
Grey box model identification for railway cars system is simulated and tested in laboratory by grey box software tools, it is proved that the scheme is feasible and valid.
由于岩溶地下水分布难以量测，岩溶水文系统多为黑箱或灰箱，采用岩溶水文模型量化其水循环过程常存在许多疑难问题。
There are some problems in modelling karst water circulation using hydrological model as lack of information of groundwater distribution in karst system (black box or grey box).
应用机理分析建模和灰箱建模相结合的方法，建立了单轴燃气轮机发电机组及其控制系统的数学模型。
Applying the method of combining the mechanism analysis modeling and gray box modeling, the mathematic model of the single-shaft gas turbine generating units and the control system was established.
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