Read Edit View history 主法向量 zhǔfǎxiàngliàng principal normal vector Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 主法向量 · zhǔfǎxiàngliàng · principal normal vector 2026/03/04 主法向量 zhǔfǎxiàngliàng principal normal vector principal normal vector (to a space curve) 在这一点，曲线的主法向量指向曲率中心。 created sense Mar 4, 2026, 02:25 AM