Servlet 构成典型的模型-视图-控制器（MVC）体系结构的控制器层，并充当表示层和模型层的接口。
Servlets form the controller layer of a typical Model-View-Controller (MVC) architecture and serve as an interface between the presentation and the model layers.
文章介绍几种典型的现场总线技术及特点，并介绍了现场总线技术在电力系统中应用及系统的构成与特点。最后说明了现场总线技术发展前景。
This article introduces some typical field buses and their application, formation and feature in electric power system, and at the end, forecasts the prospect of field buses.
推荐了不同类型连续模的定位系统及其构成，并介绍了典型冲模使用的定位系统及运作方式。
The positioning system and its constitution of the different types of progressive die are recommended. The positioning system and the operating mode used for typical punching die are introduced.
应用推荐