drive-download-20190115T115806Z-001

说明：  1．管理信息系统（学生成绩） 两种用户等级：管理员和用户，均用用户名和密码登陆，通过识别不同类型的用户名，进入不同的操作界面。 1) 管理员功能： i 用户管理：增加、删除用户； ii 记录录入、修改、删除 iii 查询：单项查询、多项查询、范围查询 iv 分类统计：提供有代表性的统计结果 2) 用户功能： a) 修改密码 b) 查询本用户信息 c) 修改个人信息(1. Management Information System (student performance) two user levels: administrators and users use a user name and password, by identifying different types of user name, into a different interface. 1) The administrator function: i user management: add, delete users ii record entry, modify or delete iii Inquiry: individual inquiries, a number of inquiries, the scope of inquiry iv classification statistics: to provide a representative statistical results 2) user features: a) Change Password)

为制导律、控制率的仿真做了很好的基础模型(A good basic model is built for guidance law and control rate simulation.)

通过该程序可以计算前缀、中缀和后缀表达式的值。-Through the program can calculate the prefix, infix and postfix expressions value.

说明：  齿轮动力学分析，计算动载系数，位移加速度等(Gear dynamic analysis, calculation of dynamic load factor, displacement acceleration and so on)

子类方法不可比父类方法抛出更多的例外。子类抛出的例外或者与父类抛出的例外一致，或者是父类抛出例外的子类型。或者子类型不抛出例外。(Class methods are not comparable to the parent class method throws more exceptions. The subclass thrown exception or thrown with the parent class exceptions, or the parent class throw exception sub type. Do not throw exceptions or sub type. )

这是一本最经典的渗流书，为渗流大师毛昶熙所著(This is the most classic book on seepage, written by Mao Zhaoxi, the master of seepage.)

自己联系的链表实现代码,请大家一起学习！(Contact the linked list to achieve the code, please learn together!)

python金融大数据分析的pdf数据，挺清晰的哦~~(Financial data analysis using python)

说明：  Python程序调用jieba库与词云提取平凡的世界词云(Extracting ordinary world word cloud with Jieba library and word cloud)

powerbuilder实用编程10例 函数调用(powerbuilder 10 cases of practical programming function call)