• 2022-06-05
    如图所示,一平面简谐波沿 [img=11x14]18033aa3b918c89.png[/img] 轴正向传播,已知 P 点的振动方程为 [img=145x25]18033aa3c24013c.png[/img],则波的表达式为( )[img=336x190]18033aa3cd594f6.png[/img]
    A: [img=200x44]18033aa3d79ec89.png[/img]
    B: [img=179x39]18033aa3e2c0625.png[/img]
    C: [img=206x44]18033aa3ed2cb16.png[/img]
    D: [img=141x39]18033aa3f9e23cc.png[/img]
  • 举一反三