• 2022-06-27
    ‏FCC的弗兰克不全位错的伯氏矢量是:‏‏‏
    A: [img=98x59]18032575fda8526.png[/img]
    B: [img=103x57]18032576058bfd2.png[/img]
    C: [img=108x64]180325760e74106.png[/img]
    D: [img=108x60]1803257617a24ac.png[/img]