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说明：  包括Hypermesh的使用教程和基本案例，用于有限元的网格划分，尤其是广泛使用的非线性有限元软件Abaqus。(Including Hypermesh tutorials and basic cases, used for finite element meshing, especially the widely used nonlinear finite element software Abaqus.)

说明：  采用Laser - PVDF 实验系统对纳米AlP/ SiO2 中激光超声信号进行采集. 利用小波的多尺度分解、重 构和消噪功能,提取出直达波及其反射回波,测量了时间间隔和纳米AlP/ SiO2 的纵波声速. 结果证明小波变换 的方法能有效地处理复杂激光超声信号.(Using Laser- PVDF experimental system of nano-AlP/SiO2 Laser ultrasonic signal acquisition. Using wavelet multiscale decomposition, reconstruction and de-noising function, extracted from direct wave and its reflection echo measured time interval and nano-AlP/SiO2 of the longitudinal wave speed of sound. wavelet transform results show that the method can effectively deal with the complexity of laser ultrasonic signals.)

说明：  如果你满足以下条件： ? 会使用电脑，但从来没写过程序； ? 还记得初中数学学的方程式和一点点代数知识； ? 想从编程小白变成专业的软件架构师； ? 每天能抽出半个小时学习。 那么你就能学会python(If you meet the following criteria: Can use a computer, but never write a program; Remember junior high school math equations and a little algebra; Want to go from programming whiz to professional software architect; I can spare half an hour to study every day. Then you can learn python)

Power System Analysis - John J. Grainger ebook

一些常见放大电路,主要是常用芯片的各种设计连接(Some common amplifier is mainly used to connect chip design)

MATLAB神经网络43个案例分析.pdf+源码(43 cases of MATLAB neural network analysis of.Pdf+ source code)

北大群论讲义，作为老师讲的讲义，还算通俗易懂。(North group theory lectures, as teacher handouts, fairly easy to understand.)

介绍了Ip over SDH的基本知识和技术。(introduced Ip over SDH the basic knowledge and skills.)

zendframework入门指南 中文版(zendframework)

CPLD_FPGA的入门资料.pdf格式,非常清晰.不可多得的入门级资料.(CPLD_FPGA introductory information. Pdf format, is very clear. A rare entry-level information.)