如图所示s1s2是一水平面上的两个波源它们的振动�期都为t振幅都为a.某时刻s1�出的波恰好传到cs2�出的波恰好传到a图中画出的 Template




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tomski如图所示s1s2是一水平面上的两个波源它们的振动�期都为t振幅都为a.某时刻s1�出的波恰好传到cs2�出的波恰好传到a图中画出的 coloring