...取项(ID) o 9.11 拟元素选取项(Pseudo-element) o 9.12 拟类别选取项(Pseudo-classes) 10 方框的基本介绍 (Introduce to Box) 11 几个特别的性质(properties) 12 参考资料 备忘录︰正在写书本的大纲阶段。
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介绍了该系统的组成、制式转换的基本工作原理、用FPGA实现的途径、视频混合的方法和实际应用效果，给出了方框图。
The constitution of the system, basic operating principle, the approach implemented with FPGA, video mixing method and the practical application effect are introduced, the block diagrams are given.
本文介绍电力列车微波智能定位系统的基本工作原理、设计思想及方框图。
The basic principle, designing idea and the function diagrams of the microwave intelligent positioning system for electric train are presented in this paper.
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