如果有两个矢量。
Then you have two vectors given on the plane.
然后得到平面上的两个给定向量。
How do we decide if two vectors are parallel?
我们平时怎么验证两个向量平行呢？
To see a simple example, let us create two vectors.
为了查看一个小例子，让我们来创建两个向量。
Will we have to know how to rotate vectors and so on?
我们需不需要掌握如何旋转向量这些知识点？
Let's bring some vectors in now.
现在让我们加入一些矢量元素。
两个向量的点乘积。
We use boldface type for vectors.
我们用黑体形式表示矢量。
Returns true if the vectors are equal.
如果两个向量相等，返回真。
New PSD not made: define vectors first.
新的PSD没有被建立：请先定义矢量。
New curve not made: define vectors first.
新曲线没有被建立：请先定义矢量。
Retrovirus is one of the vectors in common use.
逆转录病毒是最为常用的载体之一。
Any plane actually has infinitely many normal vectors.
每一个平面都有无数条法向量。
There are also vectors, but I won't discuss them here.
也有向量，不过在这里不作讨论。
Such vectors are often particular sorts of virus.
这些载体经常是一些特定的病毒。
If the two vectors are the same length, it is easy.
如果两个向量的长度是相同的，它很容易。
OK, more questions? So, what else can we do with vectors?
还有问题么？，好，那么我们还能对向量干什么呢？
This is a property of orthogonal vectors of length 1.
这是长度为1的正交向量的性质。
The second number is the number of constant vectors to load.
第二个参数指的是加载的常量向量的数量。
Nanoparticle has been the focus in recent research of vectors.
纳米粒是近年来载体研究中的热点。
we want to know what combination of those 3 vectors produce that one.
我们想要知道那三个向量的什么组合会产生那个。
It has great advantage in measurement and application of vectors.
该模块在矢量的测量和应用中有突出的优越性。
Every basis of a linear space contains the same number of vectors.
一线性空间的每一基底包含同样数目的向量。
A couple consisting of only two vectors is called a simple couple.
仅由两个矢量组成的力偶叫作简单力偶。
These two vectors are perpendicular exactly when their dot product is zero.
当点乘的数量积为零时,这两个向量垂直。
The simple transformation method for target vectors has been put forward.
提出了目标向量的简单变换方法。
Objectives: To isolate spotted fever group rickettsiae from tick vectors.
目的：从蜱类媒介中分离斑点热群立克次体。
And, in particular, we can use this to detect when two vectors are perpendicular.
特别地，可以用这个，来检验两个向量是否相互垂直。
Vectors with the same size and the same direction are called equal vectors .
长度相等且方向相同的向量叫做相等向量。
Vectors with the same size and the same direction are called equal vectors .
长度相等且方向相同的向量叫做相等向量。
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