2.如图所示水下光源s�水面a点�射一束光线折射光线分别为ab两束则 A.在水中a光的速度比b光的小 B.用同一双缝干涉实验装置分别用 Template




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tomski2.如图所示水下光源s�水面a点�射一束光线折射光线分别为ab两束则 a.在水中a光的速度比b光的小 b.用同一双缝干涉实验装置分别用 coloring