• 2022-06-27
    FCC的全位错的伯氏矢量是:
    A: [img=98x59]180325758a0ebb0.png[/img]
    B: [img=103x57]18032575928f1a6.png[/img]
    C: [img=108x64]180325759ac89a9.png[/img]
    D: [img=108x60]18032575a434ed8.png[/img]