释义 |
- (数)常数向量:指在数学中,所有元素都相等的向量。
- 常向量:指在计算机科学中,指定长度的向量,所有元素都相等。
1 ?常向量 常向量 constant vector 异常向量 primary exception vector .. 2 [数]?常数向量 ... c = + r r r r 其中,H 称为访问矩阵(access matrix), 和 f c r g c r 称为偏移向量(offset vector)或常数向量(constant vector). 容易看出,具有一致生成访问的数据重用才可能在多组迭代间反复出现. 3 ?构造常数向量 maple_百度百科 ... ConstantMatrix 构造常数矩阵 ConstantVector 构造常数向量 Copy 构造矩阵或向量的一份复制 ...
- 1
If you take a vector field that is a constant vector field where everything just translates then there is no divergence involved because the derivatives will be zero. 如果取的向量场是处处恒定的,所有点都是平移关系,所以没有散度,因为导数为零。 - 2
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。 - 3
And, in some cases, for example, if you know that the vector field is tangent to the curve or if a dot product is constant or things like that then that might actually give you a very easy answer. 例如,在某些情况下,如果已知向量场与曲线相切,或者内积是一个常数等等,那么结果将会很简单。
|