基本解釋[數(shù)] 單位切向量英漢例句雙語例句It has a hat because it's a unit vector, and T because it's tangent.這上面有一個帽子表示它是單位矢量，T表示它是切線。And so that means that any vector u, any unit vector tangent to the level set of g is going to be perpendicular to the gradient of f.也就是說，任何向量u，任何與g的水平集相切的單位向量,應該要與f的梯度垂直。unit tangent vector更多例句專業(yè)釋義數(shù)學單位切向量