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开关电源设计书，美国人写的 ，很经典 ，在电源行业发展的，一定要看看这本书！(Switching power supply design of the book, written by Americans, it is a classic, in the power industry, we must look at this book!)

关于SDRAM的文件为了下载传上来的 这回够20字可以下了吗(About the pass file to download to the SDRAM)

I2C总线协议，对学习及如何使用I2C协议进行模拟开发有一定的帮助(I2C bus protocol on learning and how to use the I2C protocol to simulate the development of a certain degree of help)

gsm原理 (gsm原理 )

雷达原理（第三版）丁鹭飞，雷达研究领域经典的基础类教材。文件包括各章的PPT以及PDF格式的电子全书。方便快速查阅和仔细研读相关知识。(The book, Radar Principles (3rd edition) by Ding Lufei, is a classical fundamental teaching material in the field of Radar research. The package includes PPT file of each chapter and the detailed e-book in pdf-format, which is very convnient for fast looking for or close reading up related knowledge.)

OGRE 3D引擎所含设计模式之分析 OGRE 3D引擎所含设计模式之分析(not)

时间序列分析 高阶统计量方法 张贤达老师1996年的书，已经很难找到下载了:)(ZHANG Xian-da teacher in 1996 the book has been difficult to find downloaded:))

说明：  《The Little SAS Book 中文版》以大量实例、清晰简明的解释以及尽可能少的术语来介绍SAS语言，且大部分的功能均来自Base SAS。Base SAS包含了所有程序员所使用的核心功能。(The Little SAS Book Chinese Edition introduces SAS language with a large number of examples, clear and concise explanations and as few terms as possible, and most of its functions come from Base SAS. Base SAS contains the core functions used by all programmers.)

Mobile Channel Characteristics, 移动通信信道的很好的一本书，经典书籍。(Mobile Channel Characteristics, mobile communication channel a good book, classic books.)

BeiDou Navigation Satellite System Signal In Space