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Coupled Oscillators

View the complete course: http://ocw.mit.edu/8-03F04

License: Creative Commons BY-NC-SA

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2008四川大地震 - 5/19下午14：28分全国人民默哀三分钟悼念四川地震遇难者­，汽车舰船火车鸣笛，防空警报鸣响。国殇！