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说明：  SQL语言简明教程 一个学习SQL语言不错的教程 为PDF文件格式 讲述了SQL语言的概貌特点、SQL的数据查询数据定义数据操纵数据控制功能。简明扼要，适合初学数据库者学习、参考。(Concise Guide to the SQL language SQL language learning a good guide to the PDF file format on the SQL language features of a picture, the data query SQL Data Definition Data Control data manipulation functions. Concise, database suitable for beginners learning, reference.)

说明：  Python3 for Data Analysis, a handbook,a table for studying python3.

python datamining python 数据挖掘实战(python datamining Data mining practice useful code in study)

谭浩强c++课件第五章 是一个很好的C++学习课件 值得拥有(Hemopurification c++ courseware fifth chapter is a good learning courseware deserve C++)

ansys Maxwell 官方 培训 教程。 里面有例子和对应的文件。(ANSYS Maxwell Official Training Course. There are examples and corresponding documents.)

opnet仿真卫星通信指导pdf，较为详细，可供参考(opnet simulation of satellite communication guide pdf, more detailed, for reference)

关于深度学习的一些论文资料，大家可以借鉴看一下(some pdf file about deep learning , thesises , we can study it for deep learing)

说明：  BeiDou Navigation Satellite System Signal In Space

Abaqus子程序Vumat初学者好用的小例子，PDF文件，内有代码和例子详解(Abaqus small example subroutine Vumat easy to use for beginners, PDF files, there are examples of code and Explanation)

说明：  visual C ++ ebook for programmer