中英▼

  • 抛物线的焦点位于抛物线轮廓外部。

    The focus of the parabolic profile is located outside of the profile.

    youdao

  • 抛物线的焦点位于抛物线轮廓外部。

    The focus of the parabolic profile is located outside of the profile.

    youdao

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