Ancient "ceremony" is extremely complex, can generally be divided into ceremonies, institutions, norms and the concept of four dimensions.
古代“礼”的内容极为庞杂，大致可以分为仪式、制度、规范和观念四个层面。
This paper gives characteristic vectors of four dimensions for target tonnage identification and design of binary tree classifiers pattern recognition.
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。
From the angel of four dimensions vector and physics observation, this paper discusses the coordinate transform relationship between the relative movement inertia reference frames.
文章从四维矢量、物理观测的角度出发，就相互运动惯性系之间的坐标变换关系进行讨论。
From the angel of four dimensions vector and physics observation, this paper discusses the coordinate transform relationship between the relative movement inertia reference frames.
文章从四维矢量、物理观测的角度出发，就相互运动惯性系之间的坐标变换关系进行讨论。
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