• 2022-06-05
    ‌如图所示,一平面简谐波沿 [img=11x14]180333f1425d26f.png[/img] 轴正向传播,已知 P 点的振动方程为 [img=145x25]180333f14ae926c.png[/img],则波的表达式为( )‎‌[img=336x190]180333f156df055.png[/img]‎‌‎
    A: [img=200x44]180333f161e9a07.png[/img]
    B: [img=179x39]180333f16d9acef.png[/img]
    C: [img=206x44]180333f17789809.png[/img]
    D: [img=141x39]180333f17fb7de7.png[/img]
  • 举一反三