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竖直

当一个物体只处于“上-下”方向排成直线时,被称为竖直。概略地称为与地平线水平线垂直。尽管如此,相似地术语“顶点”也表示它有相同的位值,但是它的两端相反,具有方向性。

  • 自然科学上,一个竖直方向是指在地心引力的方向上,它的具象化用铅垂线来表示。
  • 如果一对有一个公共顶点和一对公共直边且位置相反,它们被称为竖直角。
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竖直
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