制作的预加载动画特效。

EAN条码字体的解码算法 经常发现用PB的开发人员在问为什么用EAN的字体打出来的条码扫描枪无法扫描 其实受EAN的编码规格的限制，EAN的字体是不能直接使用的，EAN13的编码规格就不 多说了，下面给出两个函数可把条码转换为EAN字体可识别的字符串(分别对应EAN13和EAN8两种编码)-EAN barcode font decoding algorithms are often found with the development of PB in the question why the fonts EAN bar code scanning to fight out of the gun can not scan a matter of fact by the EAN coding specification limit, EAN fonts can not be directly used, EAN13 of coding specifications do not say, and given the following two functions can be converted to EAN barcode fonts can be identified by the string (corresponding to two coding EAN13 and EAN8)

说明：  四步相移法得到相位图，再利用解包裹得到正确完整的图(Phase diagram obtained by four step phase shifting method)

美信公司max274滤波器设计软件-Maxim max274 filter design software company

rtl8213(m)_fhg_v1.0.pdf 1000M光纤网卡原理图(rtl8213 (m) _fhg_v1.0.pdf 1000M Fiber LAN card schematic)

说明：  智能企业建站系统，该系统能让用户在短时间内迅速架设属于自己公司的企业网站。(Intelligent Enterprise Station Building System, which enables users to quickly set up their own company website in a short time.)

说明：  北航数值分析课件全套，包含考试题和大作业的要求。(Beihang numerical analysis courseware)

python3 taskw module

说明：  在视频和图像的采集过程中，由于受到地物环境复杂、物品之间相互遮挡以及环境光照条件多变等因素的影响，经常会导致场景的光照 要表现为图像中亮的区域光线足够或者过强，而暗的区域照度不足，导致一些重要的细节信息无法凸显甚至被掩盖掉，严重影响了图像 和应用价值，因此开展光照不均匀图像的校正研究，消除不均匀光照对图像的影响，已经成为当前图像处理领域的一个研究(In the process of video and image acquisition, due to the complex environment of the ground objects, the mutual occlusion between objects and the changeable environment lighting conditions, the lighting of the scene often results In order to show that the light in the bright area of the image is enough or too strong, and the illumination in the dark area is not enough, leading to some important details can not be highlighted or even covered up, seriously affecting the image Therefore, it has become a research in the field of image processing to carry out the correction research of uneven illumination image and eliminate the influence of uneven illumination on image)

说明：  可以实现行数小于等于十三的杨辉三角编程，并且实现了数字的对齐(Yang Hui triangle programming with lines less than or equal to thirteen can be realized, and digital alignment can be realized.)

说明：  二维弹性波正演程序，fortran语言编写(Two-dimensional elastic wave forward procedure, fortran language)