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Nehe的opengl全部教程，适用于c++语言，适合初学者。(All Nehe' s opengl tutorials for c++ language, suitable for beginners.)

本书为清华大学温诗铸院士的一本弹流润滑专著，很权威。(This book is an academician of EHL,written by Shi-Zhu Wen a monograph in Tsinghua University.it is authoritative.)

gsm原理 (gsm原理 )

this is a plc program

physics of cyrstal growth 英文版的教材，很实用(physics of cyrstal growth )

新型基于MRAS 的永磁同步电机(Novel based on the MRAS PMSM)

一本以python为学习语言的机器学习书，内容详细，很适合python初学者学习(A machine learning book based on Python for learning language is detailed and suitable for Python beginners to learn.)

ppt高级技巧系列03，让你成为ppt制作高手。(ppt series of 03 advanced techniques, so that you become a master production ppt.)

kernel-api书籍，英文版，希望对大家有所帮助(kernel-api book, in English, I hope all of you to help)

板波资料和书，里面有瑞利波和lamb波的相关资料(Plate wave data and books)