PDF-ercikaifa

北斗系统空间信号接口控制文件正式版。北斗系统基本服务性能如下：位置精度：平面 10米、高程10米；测速精度每秒0.2米；授时精度单向50纳秒；可提供双向高精度授时和短报文通信服务。通过广域差分和地基增强等手段，北斗系统服务 性能还可进一步提高，满足各类用户需求。(Official version of the the Beidou system space signal Interface Control Document. The Beidou system performance are as follows: position accuracy: plane 10 meters, 10 m elevation velocity accuracy of 0.2 meters per second timing accuracy of the one-way 50 nanoseconds provide two-way high-precision timing and short message communication service. By means of wide area differential and ground-based augmentation Beidou system performance can be further improved to meet the needs of all types of users.)

编译原理的教程和一个实习的例子程序，参考价值高。(compiler principles guide and a practical example of the procedure, the high reference value.)

PDF文件格式进行介绍，对正在进行PDF二次开发的人员有一定参考价值。(Specification of PDF File Format)

医疗器械注册管理办法 医疗器械行业相关法规和管理方法(Medical Device Registration)

C++ excercise 1 from IITU

垃圾邮件样本，著名的Ling-spam 垃圾邮件样本，做垃圾邮件实验非常有用的标准(Spam sample, the famous Ling-from spam spam samples spam very useful experimental standard)

excel 下合并当前目录下所有工作表到一张中

PBOC3.0 第13部分，金融IC卡行业重要参考资料(PBOC3.0 13th)

是提供的一个图片管理程序；用户可以借助于该程序(Is to provide an image management procedures users can help the program)

开题报告ppt模板！毕业设计、论文答辩绝对有用！值得珍藏！(Opening report ppt templates! Graduation project, thesis absolutely useful! Worth collecting!)