class 1

微信商城小程序源码带后台可直接调用，后台为PHP(WeChat mall program source code can be called directly in the background)

说明：  pk法求颤振,可以求得机翼的颤振速度，提供参考(pk method the chatter, you can obtain the flutter speed reference)

这是一个用vb.net编写的扫描条形码程序，在图书馆等利用它可是很方便的哦．-using vb.net prepared by the bar code scanning procedures, the use of the library, but it is very convenient oh.

单片机LED七彩跑马灯程序,此程序为飞利浦公司开发-Colorful LED ticker program

it is a digital clock

使用C#语言运用.net三层架构开发的二手车交易网(Used Vehicle Trading Network Developed with C# Language and. net Three-tier Architecture)

国家标准：爆炸性气体环境用电气设备-正压外壳型设计标准。(National Standards: Electrical equipment for explosive gas atmospheres- Pressurized enclosures design standards.)

ADI公司ADF4360-9 PLL+VCO频综芯片调试笔记(ADI ADF4360-9 PLL+VCO frequency synthesizer chip debugging notes)

AD9361的参考资料，是中文的，便于理解和阅读，加快设计进程。(AD9361 design file,it is in englis,which is easy to read and undstand.)

说明：  基于matlab使用FDTD迭代算法进行了一个平面波传播的仿真模拟，有助于FDTD算法的初学者更好理解算法(Based on MATLAB and FDTD iterative algorithm, a simulation of plane wave propagation is carried out, which is helpful for beginners to understand FDTD algorithm better)