• 然后得到平面两个给定向量

    Then you have two vectors given on the plane.

    youdao

  • 找出这个向量势函数

    I want to find the potential for this vector field.

    youdao

  • 那么当然知道它的法向量

    Well, you know the normal vector.

    youdao

  • 方向基本这里单位切向量一致。

    And, the direction is essentially that of a vector.

    youdao

  • 一个平面向量

    That was a vector field in the plane.

    youdao

  • 向量中除去过的符号同一位置放入结果

    Remove used tokens from the vector and put the result in their place.

    youdao

  • 实际上我们需要一个处处定义的向量

    We need, actually, a vector field that is well-defined everywhere.

    youdao

  • 向量BP我们知道关于件事

    So, vector BP, we know two things about it.

    youdao

  • 最小值的时候,两个梯度向量垂直了

    When I am at a minimum, the two gradient vectors are parallel.

    youdao

  • 乘的数量零时,两个向量垂直

    These two vectors are perpendicular exactly when their dot product is zero.

    youdao

  • 向量处理过程明显优化代码进行化。

    The most obvious optimization to make on a vector process is to vectorize the code.

    youdao

  • 但是可以继续用法向量的

    But you can also just stay with a normal vector.

    youdao

  • 现在我们拿这个向量向上圆盘

    Now take your disk with its normal vector sticking up.

    youdao

  • 从而向量的方向竖直向上向下的。

    The normal vector is just sticking straight up or straight down.

    youdao

  • 假设我们向量两个分量

    Let's say that our vector field has two components.

    youdao

  • 我们试试向量

    And let's try a really big vector.

    youdao

  • 还有,这些特性以及一个新的数据类型使用向量指令进行并行化计算

    Also, new intrinsics and a new data type use the vector instructions for parallel calculation.

    youdao

  • 也就是向量f实际上一个函数梯度

    Say that f, our vector field is actually the gradient of some function.

    youdao

  • 就是后面我们向量空间。

    That actually is what we will call later a vector field.

    youdao

  • 我们记得是个单位速度旋转向量

    Remember that was the vector field that looked like a rotation at the unit speed.

    youdao

  • 其中的一个聚集对象通过向量中的位置进行标识

    Each aggregate object is identified by its position in the vector.

    youdao

  • 认为梯度向量零也是可以的。

    So, if you prefer, that's where the gradient vector is zero.

    youdao

  • 向量竖直的。

    Well, our vector field, is actually vertical.

    youdao

  • 即竖直方向单位向量

    It's the unit vector in the vertical direction.

    youdao

  • 位置向量阶导

    So, it's the second derivative of a position vector.

    youdao

  • 物理学向量例子

    That would be an example of a vector field that comes up in physics.

    youdao

  • 我们知道三个向量什么组合会产生那个

    we want to know what combination of those 3 vectors produce that one.

    youdao

  • 所以向量指向的上方。

    And so the normal vector is going towardS what is up for me.

    youdao

  • 假定向量

    Let's say that my vector field has components p, Q and r.

    youdao

  • 非常适合dna或者其它数值数据之类长的向量

    It is perfectly suited for long bit vectors such as DNA or other numeric data.

    youdao

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