但是你也可以继续只用法向量的。
这个向量的所有分量就是这些偏导。
从而法向量的方向是竖直向上或向下的。
The normal vector is just sticking straight up or straight down.
它是位置向量的二阶导。
故我们是把位置向量，分解为简单向量的和。
So, we want to decompose the position vector into a sum of simpler vectors.
向量的类型取决于所提升的值的类型。
它只简单地打印argv向量的内容。
这将实现在数据字段中创建每个字母向量的策略。
This will fulfill our strategy for creating a vector on each letter in the data field.
我们想要知道那三个向量的什么组合会产生那个。
we want to know what combination of those 3 vectors produce that one.
这是平面法向量，和沿直线向量的点积。
It's the dot product between the normal vector of a plane and the vector along the line.
重量是w和价值，这是我们看过的向量的两个值。
V the weight, w, and v, these are the two vectors we've seen here.
为了求出高度，需要知道这向量的垂直分量是多少。
And to find the height of this thing, I need to know what actually the normal component of this vector is.
使用MPI进行并行编程来实现矩阵与向量的乘法。
Parallel programming using MPI to multiply a matrix by a vector.
我们还学过加速度，也就是速度向量的导数。
And, we've also learned about acceleration, which is the derivative of velocity.
现在，这是一个由三个向量的线性组合，它们碰巧…
It's a linear combination now of 3 vectors and they happened to be...
举例来说，spu_insert不会修改向量的内容。
For instance, spu_insert does not modify the contents of the vector.
看到了吧，系数变为0了，当直线垂直于法向量的时候。
So, see, this coefficient becomes zero exactly when the line is perpendicular to the normal vector.
为了找到带法向量的面元，我就取这两个的叉积。
To find the surface element together with a normal vector, I would just take the cross-product between these guys.
特别地，能得到α角的余弦值，我们知道如何找两向量的夹角。
In particular,cosine of alpha,I can get, well, we know how to find the angle between two vectors.
这个值可以为负，从而在Face对象的法向量的反方向上挤压。
This value can be negative to extrude in the direction opposite the Face object's normal vector.
梯度向量的垂直方向，为什么是这样而不是另外一个方向？
Does the gradient vector, why is the gradient vector perpendicular in one direction rather than the other?
你知道……不是向量的长度决定……是你用多大的力决定。
You know.. it’s not the length of the vector that counts… it’s how you apply the force
你知道……不是向量的长度决定……是你用多大的力决定。
You know.. it's not the length of the vector that counts… it's how you apply the force
这门课我们首先学习的概念是向量，以及怎样做向量的内积。
So, the first things that we learned about in this class were vectors, and how to do dot-product of vectors.
spu_insert用来将一个标量值放入向量的某个特定元素中。
Spu_insert is used to put a scalar value into a specific element of a vector.
结合基于LLR的ngram生成算法并行处理文本文档到向量的转换
Parallel text document to vector conversion using LLR based ngram generation
我们要做的是，沿着曲线的每一点上，取向量场和法向量的点积。
What we will do is just, at every point along the curve, the dot product between the vector field and the normal vector.
最后，还要释放分配给向量的内存并把NULL向量返回给调用者。
Lastly, the memory allocated to the vector is also freed and NULL vector is returned to the caller.
函数matrix 、array和dim是用于设置向量的维的简单函数。
The functions matrix , array , and dim are simply convenience functions for setting the dimensions of a vector.
函数matrix 、array和dim是用于设置向量的维的简单函数。
The functions matrix , array , and dim are simply convenience functions for setting the dimensions of a vector.
应用推荐