机器控制画面的45度功能框功能软件，可用于音响之类的电器产品。-45 degrees machine control screen combo box function software can be used to sound like electrical products.

这是一个液压动力机械滑台的设计原理图，是大学本科课程设计之一。尤其是在机械、电气学院。来源于西华大学电器与可编程控制与工业监控组态的课程设计。-This is the design principle diagram of a hydraulic mechanical slide, is one of the undergraduate curriculum design. Especially in mechanical and electrical institute. Course des