• 2022-06-07
    如果入射波是[img=171x25]1802fce8f898b77.png[/img],在x=0处反射后形成驻波,反射点为波腹,设反射后波的强度不变,则反射波的方程式为:
    A: [img=197x25]1802fce903ee862.png[/img]
    B: [img=229x25]1802fce910525fb.png[/img]
    C: [img=197x25]1802fce91ae0021.png[/img]
    D: [img=229x25]1802fce925269aa.png[/img]