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一本介绍微分方程的电子书籍,包含一阶高阶\线性非线性方程的定义及求解方法(introduced a differential equation of e-books includes a band high-ranking linear nonlinear equations and the definition of Solution)

abaqus的python脚本开发，计算平均应力(abaqus python script development, calculate the average stress)

保铮的最新雷达成像原理，对于学习SAR的同志帮助很大。(the latest radar imaging principle, the SAR study Comrade great help.)

说明：  国内外知名企业的求职笔试大全，包括微软，IBM，华为，中兴等在内，部分还有参考答案，相信对想在IT界大展宏图的你会有很大的帮助的！哈哈！(famous enterprises at home and abroad for job-seekers written Daquan, including Microsoft, IBM, Huawei, ZTE, there are some reference to the answer, I believe in the IT sector to show the ambitious you will be a big help! Haha!)

C++库函数，为英文版，里面涵盖了C++标准的库函数，可以作为C++程序员的参考书(C library functions, for the English version, which covers the C standard library functions can be used as a reference book for C programmers)

包含两本书：Telecommunication Breakdown_Concepts of Communication Transmitted via Software-Defined Radio以及它的中文版《软件无线电》(It contains two books: Telecommunication Breakdown_Concepts of Communication Transmitted via Software-Defined Radio and its Chinese version of " software radio" )

说明：  C8051F930完整详细的中文资料，包括9XX系列的管脚定义，封装、应用电路等(C8051F930 complete details of the Chinese data, including the 9XX series of pin definition, package, application circuit, etc.)

aasew jngugt khig hikh

本篇文章叙述了锁相环原理，是学习锁相技术不可多得一篇好文章(This article describes the principle of phase-locked loop, phase-locking technology is invaluable to learn a good article)

说明：  这是有关相控阵的书籍，介绍很全面而且翔实，有关超声发射和聚焦方法介绍等(This is a book about phased arrays, the introduction is very comprehensive and informative, about the introduction of ultrasound transmission and focusing methods, etc.)