• That vector is called a "null vector".

    那种矢量叫做矢量“。

    youdao

  • An expressing vector of major outer-membrane protein of Chlamydia psittaci was constructed.

    构建了鹦鹉热原体主要外膜蛋白表达载体

    youdao

  • This research intended to construct a eukaryotic expression vector with a site-directed mutation of porcine MSTN propeptide gene.

    研究旨在构建具有猪 MSTN 前肽基因定点突变真核表达载体

    youdao

  • I experience a vector quantity.

    经历一个矢量量变

    youdao

  • It's a vector, perpendicular.

    一个与半径垂直矢量

    youdao

  • Now, what's the gradient vector?

    现在梯度向量什么呢?

    youdao

  • These involve vector quantities.

    这些则包括向量

    youdao

  • Well, you know the normal vector.

    那么当然知道它的法向量

    youdao

  • Remember this-- this is a vector.

    记住是个矢量

    youdao

  • Of course, it's not a real vector.

    显然不是一个实际意义上的向量

    youdao

  • What is the normal vector?

    那么法向量又是什么呢?

    youdao

  • We have this vector field.

    是向量

    youdao

  • Now, how do we get this unit vector?

    我们怎么得到单位矢量呢?

    youdao

  • A I call this vector vector a.

    称之为矢量

    youdao

  • It is not a unit vector.

    不是单位向量

    youdao

  • So, the acceleration vector is;.

    加速度就是

    youdao

  • That was a vector field in the plane.

    一个平面向量

    youdao

  • This makes it a vector.

    构成一个矢量

    youdao

  • What about vector BP?

    向量BP什么

    youdao

  • This is that vector.

    就是这个矢量

    youdao

  • Why else would you know a normal vector?

    还有什么原因知道向量

    youdao

  • We dot our favorite vector field with it.

    我们喜欢的向量

    youdao

  • So, this vector field is not conservative.

    所以这个向量不是保守场

    youdao

  • First, code a needle using vector drawing.

    首先使用矢量图的指针编写代码

    youdao

  • That means your normal vector points down.

    意味着向量指向

    youdao

  • Add the access point to your location vector.

    访问添加位置向量中。

    youdao

  • That corresponds to normal vector pointing up.

    相当于向量指向上。

    youdao

  • Then, if I choose any vector in that tangent plane.

    那么如果选择了任何位于切平面向量

    youdao

  • BP Now, let's think about vector ab and vector BP.

    现在我们考虑向量ab向量。

    youdao

  • And, the direction is essentially that of a vector.

    方向基本这里单位切向量一致。

    youdao

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