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But what we find is that we have two radial nodes. All right.
它有两个节点，好,我们可以转回到讲义上了。
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And I'll turn around and try to sell some of the photos that I take of the people climbing.
然后我转过头来还可以试试卖我拍的登山人的照片挣钱。
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All right. So we can switch back actually to our notes here -- oh, do we have--?
好的，所以我们可以转回到讲义,哦，我们，？
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You can take one full circle divide by the time and you will get this.
你可以先转一整圈,再除以时间就得到这个
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Your steering wheel works, so you can turn the trolley car, if you want to, onto the side track killing the one but sparing the five.
而你的方向盘还没坏，只要你想，就可以把电车转到侧轨上去,牺牲一人挽救五人性命。
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When an action potential is initiated these ion channels go from their closed state to their open state, when they open sodium can now pass through.
当动作电位形成时,离子通道,从关闭状态转到打开状态,当通道打开时,钠离子就可以通过
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so you can, yeah, you can use it to go around the park, or you can use it to get from place to place, I think.
所以，你能用它去公园转，或者你可以用它从一个地方去另一个地方。
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And if it goes up 6 percent, well you'll go up 10 percent or more, and if it goes down, don't worry, I'm so smart your stocks won't go down.
如果股市涨了6个百分点，你可以转到10以上的百分点，如果股市跌了，你也不用担心，你选择的人会保证你买的股票不会跌。
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There will be an option when you pull up the tab for this particular course if you go to the course website and that will link you right to the course website.
当你们点击课程标签时,有个登陆这门课网站的选项,那个链接可以转到课程网页
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So, let's -- okay, so, why don't you all think about would happen -- we'll start with the thought exercise. You can switch back to my lecture notes then if this isn't going.
好吧，那你们想想会,发生什么，我们来想想,这个问题，如果那个不行的话,你可以转到我的讲义上来了。
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All right. So, we can switch over to the class notes.
好，我们可以转到讲义上来了。
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So you can see if you take phi, and you move it over 90 degrees, we're right here in the y z plane.
你们可以看到，把phi转到９０度，它就是ｙｚ面。
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When we have just a single bond in them molecule, you have all the free rotation you want, you can just spin it around, there's nothing keeping it in place.
当我们在分子力只有一个单键时，你可以随意旋转，你可以让它转起来，没有什么东西能固定住它。
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All right. So we can switch all the way back to our notes here.
好了，我们可以转回到讲义上来。
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So you can see, if it's spinning on its own axis in this direction we'd call it spin up, where as this way it would be what we call spin down.
你们可以看到，如果它绕自己的轴朝这个方向转,我们就说它是自旋朝上，这个方向我们叫它自旋朝下。
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All right. So we can switch back to our notes.
好，可以转到讲义上了。
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It turns out to activate RNA interference, you deliver double stranded RNA.
要激活RNA干扰效应的话,可以将双链RNA转进细胞
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