ETMVC框架的进销存系统 有权限管理，包含数据结构（数据库）-Invoicing ETMVC framework of rights management systems, including data structure (database)

风机仿真的风况模型，能生成三类风机、三类湍流强度下的NTM、ETM、EWM、EOG及ECD各种风况下实时风速-Fan, the simulation of the wind model can generate three kinds of blower, NTM under three kinds of turbulent intensity, ETM, EWM, EOG and ECD for real-time wind speed under different wind conditi