单词dot product
un.: 点积；标量积
网络: 点乘；点乘积
标量积
点积
Since scalars are independent of the coordinate system, the dot product of two vectors is called a scalar invariant.
因为标量与坐标系无关，故两个矢量的点积称为标量不变量。
If I take the dot product But now, what does it mean that the dot product between OP and A is zero?
如果我用OP·A我就得到了，那么OP和A的点积是0代表了什么呢？
It"s the dot product between the normal vector of a plane and the vector along the line.
这是平面法向量，和沿直线向量的点积。
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。
Also note that you can calculate the dot product only if the two vectors have the same number of components .
另外请注意，只有当两个矢量的组件数相同时，才能计算点积。
But, you will see that notation somehow helps to make it more straightforward So, what is dot product?
但是你会发现，这个方法会让问题更简单，那么，什么是“点积”？
Under most conditions, the dot product can be ignored, so the assumption of the uniform intensity is rational.
在大多数应用中，点乘项可以忽略，因此，光强均匀的假设是合理的。
So, that"s going to be one of the main uses of dot product.
呃，这就是点乘的一个主要用途。
The dot-product direction of the light with the vertex.
点乘每个点光的方向向量。
Let us take a down-to-earth example of a dot product.
举一个点积的，现实例子。