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"So typically we report those positions, tell them what we see, that it could possibly be seaweed, and they can vector a surface asset to confirm."
VOA: standard.2010.07.05
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So we see that I've doubled the size of the vector but I've much more than doubled the number of calls.
所以我们看到我,把向量的大小翻倍了,但是我调用的次数,不仅仅是翻倍了。
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There's the vector, and again you'll see this in your handout, says I only took the first item.
你们同样可以在讲义上看到这个向量,意思是我只拿了第一种物品。
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It comes from the fact that velocity is a vector and you can change your velocity vector by changing your direction.
其原理就是,速度是矢量,你可以通过改变方向来改变速度
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So in the textbook, you'll sometimes see the term a strategy profile or a strategy vector, or a strategy list.
你会看到有的课本中称它为,策略组合,策略向量或者策略列表
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The sources are: one,the plasmid vector that we've picked, and the second is these genes that for some reason we're interested in.
第一个是我们选择的质粒载体,第二个是我们感兴趣的基因
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But I know when I multiply a vector by a number, I get a vector in the same direction.
但是我所知道的是当矢量乘以一个常数,我会得到一个同方向的矢量
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You can imagine that if a vector is viewed from an angle, then its components will vary with the perspective.
你可以想象一下,如果换一个角度观察矢量,其分量会相应地发生变化
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The proper way to draw a vector is to draw an arrow that's got a beginning and it's got an end.
画矢量的正确方法是,画一个有起点和终点的箭头
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The beauty of that is now we have discovered a notion of what it means to multiply a vector by a number.
现在最美妙的就是我们就已经知道,数字乘以矢量的意义
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So there's the vector eight. Indicating I didn't take any of the items.
有8个0的向量,意思就是我一样东西都没拿。
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The second issue is that the gene vector, in this case the plasmid, has to be compatible with the cells that you're trying to express the gene in.
接下来的问题是如何选择合适的基因载体,在这里用到的,质粒,必须与要用来表达基因的,受体细胞匹配
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And let's try a really big vector.
让我们试试更大的向量值。
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Alright, next thing I want to do is to define the vector that plays the role of the number 0.
接下来我想做的是定义一个矢量,它相当于数字0
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This formula doesn't tell you which way it's pointing, because it's a scaler; it's not a vector equation.
这个式子没有说明方向,因为这是一个标量而非矢量方程
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There's one quantity that's going to come out the same, no matter who is looking at the vector.
但是也有一个量是始终不变的,不管是谁在观察这个矢量
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Again, when you learn the relativity, you will find out there's one vector that's staring at you.
再说一遍,当你学习相对论的时候,你会发现,有一个矢量会始终指向你
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It should have the property that when I add it to anybody, I get the same vector.
它也应该有这种性质,用它加任何矢量,得到的还是原矢量
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If I just come and say to you, "Here's the vector whose components are 3 and 5.
假如我问你们,"一个矢量的分量分别是 3 和 5
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This is how you get the rules for adding a vector to another vector, then taking a vector and multiplying it by some constant.
以上这些就是矢量加法的法则,以及数乘矢量的法则
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Once you've got that, you can do minus 7 times a vector Just take the vector, multiply it by Pi and flip it over.
明白这点之后,你就可以计算-7乘以矢量,只需用 π 去乘以那个矢量,然后将其方向调转
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This is the reason behind saying a vector has a magnitude and a direction.
这就是矢量既有大小也有方向的原因
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I want a vector that I want to call the 0 vector.
我就需要这样的一个零矢量
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The length of the vector is the length of the vector.
这个矢量的模长是保持不变的
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That's another advantage of using viruses as a gene therapy vector.
这是病毒,作为基因疗法载体的另一个优势
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Why is the derivative of a vector also a vector?
为什么矢量的导数还是一个矢量呢
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You can actually take derivatives of a vector with time.
你可以直接求位矢对时间的导数
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This vector is going to allow us to do this.
这个载体会使我们达到此目的
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So this particular vector, you probably can't even see the whole thing on your screen. Well, it's got 40 items in it.
这个特殊的向量，在你的屏幕上可能都看不全,好的，它一共包括40件物品。
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That turns out to be a very nice way to produce vectors, given one vector, the position vector.
这或许是一个得到矢量的很不错的方法,给你一个位置矢量
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