论文部分内容阅读
提起效率,同学们一般都会想到简单机械的机械效率,即有用功与总功的比值.其实,效率在能量转化和传递方面也有着广泛的应用.从近几年各省市的中考题来看,求有关能量转化和传递方面的效率问题屡见不鲜.
To bring efficiency, students generally think of the mechanical efficiency of simple machinery, that is, the ratio of useful work to total work. In fact, efficiency also has a wide range of applications in terms of energy conversion and transmission. From the examination questions of provinces and cities in recent years, It is not uncommon to ask questions about the efficiency of energy conversion and delivery.