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http://www.esafety.cn/blog/wll/73171/index.html
载入中.......................
折射现象 | 2013-11-30 10:42:00
折射现象
肥胖的物理老师为使学生明白光线折射现象,做了个实验。她将玻璃杯装满水,问道:“假设我是一道阳光,插入水中,结果怎样?”一个学生回答:“水溢出来了!”
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