So, speed, which is the scalar quantity is going to be just the magnitude of the vector, V.

因此，速度的大小即是,矢量V的模长。

youdao

r So, let's remember that the amount by which we moved, t delta r, is approximately equal to v times delta t, OK, and just using the definition of a velocity vector.

所以记住移动的量△,约等于v*△,这是用速度矢量的定义。

youdao

The main four-chamber engines designed by V. P. Glushko and new control engines from s. P. Korolev for controlling the thrust vector were installed in these units.

这些子级上安装了瓦·彼·格鲁什科设计的四推力室主发动机和谢·帕·科罗廖夫设计的用来控制推力矢量的新型姿态控制发动机。

youdao

So here's a program called Arg V, this is fancy speak for argument Vector, a list of arguments for the left or right.

这里有一个叫做ArgV的程序，这个设想讲述了,参数矢量，从左到右的一列参数。

哈佛公开课 - 计算机科学课程节选

The typical vector is called V or A or B something with an arrow on it.

表示矢量时一般在,字母 V,A 或者 B,上面加个箭头

耶鲁公开课 - 基础物理课程节选

If you want to write it as a vector equation, you want to write it as v square over r minus-- I want to say that it's pointing in the direction toward the center.

如果要写出矢量方程,就应该写成 -v^2 / r,也就是说,方向就向圆心

耶鲁公开课 - 基础物理课程节选