vector

That vector is called a "null vector". 那種矢叫作”零矢量“。

An expressing vector of major outer-membrane protein of Chlamydia psittaci was constructed. 構建了鸚鵡熱衣原體主要外膜蛋白的表達載體。

This research intended to construct a eukaryotic expression vector with a site-directed mutation of porcine MSTN propeptide gene. 本研究旨在構建具有豬 MSTN 前肽基因定點突變的真核表達載體。

I experience a vector quantity. 我經歷了一個矢量的量變。

It's a vector, perpendicular. 一個與半徑垂直的矢量。

Now, what's the gradient vector? 現在，梯度向量是什麼呢？

These involve vector quantities. 這些則包括向量。

Well, you know the normal vector. 那麼當然知道它的法向量。

Remember this-- this is a vector. 記住它，這是個矢量。

Of course, it's not a real vector. 顯然，這不是一個實際意義上的向量。

What is the normal vector? 那麼法向量又是什麼呢？

We have this vector field. 這是向量場。

Now, how do we get this unit vector? 那我們怎麼得到這單位矢量呢？

A I call this vector vector a. 我稱之為矢量。

It is not a unit vector. 它不是單位向量。

So, the acceleration vector is;. 那加速度就是。

That was a vector field in the plane. 它是一個在平面上的向量場。

This makes it a vector. 它構成一個矢量。

What about vector BP? 向量BP是什麼？

This is that vector. 就是這個矢量。

Why else would you know a normal vector? 還有什麼原因你會知道法向量？

We dot our favorite vector field with it. 用我們喜歡的向量場來點乘它。

So, this vector field is not conservative. 所以，這個向量場不是保守場。

First, code a needle using vector drawing. 首先，為使用矢量圖的指針編寫代碼。

That means your normal vector points down. 那意味着法向量指向下。

Add the access point to your location vector. 將訪問點添加到位置向量中。

That corresponds to normal vector pointing up. 那相當於法向量指向上。

Then, if I choose any vector in that tangent plane. 那麼如果我選擇了任何位於切平面的向量。

BP Now, let's think about vector ab and vector BP. 現在我們來考慮向量ab和向量。

And, the direction is essentially that of a vector. 方向基本和這裏的單位切向量一致。 ^[1]