表现该系统的特性，确定主要子系统模型和及其相互作用，选取重要的设计变数，目标函数和约束。
Characterize the system, identifying important subsystem models and interactions, selecting important design variables, the objective function and constraints.
表现该系统的特性，确定主要子系统模型和及其相互作用，选取重要的设计变数，目标函数和约束。
Characterize the system, identifying important subsystem models and interactions, selecting important design variables, the objective function and constraints.
应用推荐