大家都搜：
[物]位矢，[数]位置向量
1、costate vector───共态向量
2、brushes vector───画笔矢量
3、disarmed vector───解除防护矢量
4、vector───n.矢量；带菌者；航线；vt.用无线电导航
5、vector arena───矢量竞技场
6、vector fonts───矢量字体
7、position───v.安置；把……放在适当位置；n.位置；姿态；处境，地位；观点；职位，工作；站位
8、coinitial vector───向量共初始
9、apsidal vector───半圆形矢量
1、Well, it might be good to think of, maybe, the position vector, and maybe its variation.───这还是比较容易想到的，假如这是位置矢量，这是它的变化量。
2、Or, maybe I should insteadthink of it in terms of a position vector if it helps you.───也许我应该用位置矢量来考虑，如果你们觉得有帮助的话。
3、And I can rewrite this in vector form as the gradient dot product the amount by which the position vector has changed.───可以把这些用向量形式重新写下来，就是梯度向量和位置改变量的点积。
4、we look at how the position vector changes.───看看位置矢量的改变。
5、is the position vector, r.───是位矢。
6、Angular momentum: The vector product of the position vector (from a reference point) and the linear momentum of a particle.───角动量：（有参照点）的矢量和粒子线性动量的向量积。
7、it's the second derivative of a position vector.───它是位置向量的二阶导。
8、You can split it up into the position vector of this object, which is one-half l square root three.───你可以将它FenLie为，物体中心速度方向，3的平方根的一半。
9、We have the cross-product of the position vector to this point times the force.───我们用这个点的，位置向量，乘以这个力。