• 1. a vector quantity: 即矢量

• 1.I experience a vector quantity.
  我经历了一个矢量的量变。
  dict.yoduao.com
• 2.Isospin is a vector quantity.
  同位旋是矢量。
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• 3.Velocity is a vector quantity involving both magnitude and direction.
  速度是涉及大小和方向的矢量。
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