论文部分内容阅读
第二届全国中学生物理竞赛有这样一道题:夏天,将房间中一台正在工作的电冰箱的门打开,试分析:这是否可以降低室内的平均温度?为什么?析与解:如图是电冰箱的结构和原理示意图。电动压缩机使工作物质(如氟
The second national physics competition for middle school students has such a question: In the summer, open the door of a working refrigerator in the room and try to analyze: Will this reduce the average indoor temperature? Why? The structure and schematic diagram of the refrigerator. Electric compressor makes working substance (such as fluorine