• 2022-07-25
    导行波的传播常数γ 与截止波数[img=15x22]180380ba538fa50.png[/img]、波数k 的关系是
    A: [img=90x32]180380ba5cb1234.png[/img]
    B: [img=92x32]180380ba666f6a8.png[/img]
    C: [img=90x32]180380ba6e62a7b.png[/img]
    D: [img=100x32]180380ba76742cf.png[/img]