【摘要】 投影仪是一种利用光学元件将工件的轮廓形状进行放大并将轮廓像投影到影屏上的光学仪器。随着现代教育技术的应用与发展,投影仪在实际工作中的作用越来越大。对投影仪的工作原理及日常使用与维护作简单的介绍,对加强投影仪的使用管理力度,提高投影仪的保养措施和方法,延长投影仪的使用寿命有重要意义。更多还原

【Abstract】 The projector is a machine which can use the optic component to magnify the figure of the work piece and then project the image in the screen.With the development of appliance and progress in modern education technique,the advantage of the projector is more and more welcomed.Based on the projector’s theory,daily use and maintenance,discussion is made on the manage power,the maintenance’s methods,and on extending the life of it.更多还原