如图甲是一列波某时刻的波形图图乙是从该时刻起记录到p质点的振动图象结合两图分析可知 A该波沿x轴正方�传播 Bp 质点每个�期沿 Template




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tomski如图甲是一列波某时刻的波形图图乙是从该时刻起记录到p质点的振动图象结合两图分析可知 a该波沿x轴正方�传播 bp coloring