在传统的三维设计方法中添入时间的维度，提出四维设计观。
Add a dimension of time to the traditional three-dimension design method to propose the view of four-dimension in designs.
采用逆最优控制方法为一种四维混沌系统设计了一个线性状态反馈控制器。
A linear state feedback controller is designed for controlling a four-dimensional chaotic system by the inverse optimal controlling approach.
本文提出了舰船目标吨位识别的四维特征向量，设计出完整的二叉树分类器。
This paper gives characteristic vectors of four dimensions for target tonnage identification and design of binary tree classifiers pattern recognition.
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