And, the direction is essentially that of a vector.
方向基本和这里的单位切向量一致。
And I applied the torque in this direction, the vector.
我的力朝这个方向，矢量。
It's the unit vector in the vertical direction.
即竖直方向的单位向量。
What is the direction of the vector?
矢量c的方向是什么？
Zero vector can have a lot of direction, but only one length.
零向量可以有很多方向，却只有一个长度。
A quantity which has both size and direction is called a vector.
既有大小，又有方向的量叫做向量。
The direction of the electric field vector is indicated in each picture.
每张照片上都标出了电场矢量的方向。
Each edge point has a normal vector pointing in the direction perpendicular to the edge.
每个边缘点具有正常矢量指向在垂直的方向上的边缘。
Each edge point has a normal vector pointing in the direction perpendicular to the edge.
每个边缘点具有正常矢量指向在垂直的方向上的边缘。
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