下列说法中正确的是 A.作受迫振动的物体的�率它的固有�率来决定b.产生多普勒效应的原因是波源�率�生了变化c.波的干涉和衍射是波所特有的 Template




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tomski下列说法中正确的是 a.作受迫振动的物体的�率它的固有�率来决定b.产生多普勒效应的原因是波源�率�生了变化c.波的干涉和衍射是波所特有的 coloring