So, even if the speed is constant, that means, even if a length of the velocity vector stays the same, the velocity vector can still rotate.
因此即使速率不变，也就是说速度矢量的的大小不变，但它的方向可以做旋转。
For instance, it's also the square of the Euclidean norm on R2, the length of a two-dimensional vector, a part of the triangle inequality, and quite a bit more.
例如，R 2的平方、二维向量的长度、三角不等式等都存在勾股定理。
Consider a vector of five strings; you want to sort them on the basis of increasing string length.
请考虑一个包含5个字符串的向量；希望按字符串长度的升序排序。
A quantum state is a vector whose overall length is of no interest to us (as long as it's not zero).
量子态是向量，我们并不关心其总长度(只要不是0)。
That means a vector that is at every point of the curve perpendicular to the curve and has length one.
也就是，曲线每一点上,垂直于曲线，模长为1的向量。
It can be a normal vector of any length you want to the surfaces.
它可以是曲面上想要的任意长度的法向量。
This is a normal vector of the same length as n, well, up to sign.
这是与N长度相同的法向量，只是符号不定。
Only if the component vectors are on a straight line will the length of the vector for the sum be equal to the sum of the lengths of these components or to their difference.
只有当几个分矢量在一直线上，那么表示其和的矢量长度才会等于这些分量的长度和或它们的差。
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。
Only if the ponent vectors are on a straight line will the length of the vector for the sum be equal to the sum of the lengths of these ponents or to their difference.
只有当几个分矢量在一直线上，那么表示其和的矢量长度才会等于这些分量的长度和或它们的差。
The radius vector of each solid is always a positive length.
每个立体的矢径总是正值长度。
This way, the whole run isn't aborted if some of the functions fail, and the output from each simulation is a numeric vector of the same length, suitable for capturing to a matrix.
这样，整个运行不中止，如果某些功能失效，并从每个模拟输出是一个相同长度的数字矢量，适合捕捉到一个矩阵。
This way, the whole run isn't aborted if some of the functions fail, and the output from each simulation is a numeric vector of the same length, suitable for capturing to a matrix.
这样，整个运行不中止，如果某些功能失效，并从每个模拟输出是一个相同长度的数字矢量，适合捕捉到一个矩阵。
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