Due to the bad weather, cotton yield poer mu is very low this year.

由于天气不好，今年棉花的亩产量很低。

Remember, our true mean is this, that the Greek letter mu is our true mean.

记住，们的真正均值是这个，希腊字母μ们的真正均值。

And let's see, minus 2 times mu-- sorry, that mu doesn't look good.

然后们看，去2乘均值——抱歉，那个均值的符号看起来不对。

So, narcotics and endorphins probably activate mu opioid receptors in different ways.

所，麻醉药物和内啡肽可能不同的方式激活μ-阿片受体。

" mu" " k" times " Fn" and the " mu" " k"

" mu" " k" 乘 " Fn" 并且 " mu" " k" 将是 0.

So minus mu K so the force of friction--- I'll just put force of friction.

所去 mu K 所摩擦力 --- 只输入摩擦力。

The parameter and the data x bar and mu play symmetric roles.

参数和数据 x bar 和 mu 扮演对称角色。

One mu equals roughly 0.067 hectares.

一亩大约等于0.067公顷。

MU stands for Most Obvious Objection.

MU最明显的反对意见。

The force of friction is always mu K FN.

摩擦力始终为 mu K FN。

Now we could measure its mu, which is the magnetic permeability of that object or of that material.

现在们可测量它的磁导率，也就是那个物体或那种材料的磁导率。

And so, if I wanted to learn mu, all I need to know is X bar.

所, 如果想学习mu, 所需要知道的就是X bar。

So I know the density, pz, given mu and sigma squared.

所知道密度, pz, 给定mu和sigma平方。

So I could end up writing down F X bar given mu in sigma squared.

因此, 最终可写下 F X bar given mu in sigma squared。

Then you have x sub i times minus mu.

然后你有x下标i乘去均值μ。

Edit, Undo, minus 2 times mu times the sum from i is equal to 1 to n of xi.

编辑，撤销，去2倍均值乘从i等于1到n的xi之和。

And then you have minus mu times x sub i.

然后你有去mu乘x下标i。

Fx bar given mu and sigma squared.

Fx bar 给定 mu 和 sigma 平方。

It, it is, I won't even pretend to understand the actual mu sigma minus divided by like all that stuff.

这个，这个，甚至不会假装理解实际的μ（mu）、σ（sigma）去再除那些东西的含义。

So this is the Greek letter mu, and we put this k here for kinetic, or we can kind of say moving friction.

k示" 动" (kinetic)该系数等于摩擦力的大小。