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I suppose to a lesser literacy skill of being a good listener or viewer and have information push condensed.
假设一名优秀的聆听者,或观众需要较少的文化素养,我会将信息压缩。
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So the force that you're pushing down on here is the external pressure times the area.
或者压缩功的概念,在活塞上施加压力。
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We transition to actually real world applications later on like a compression-- how do you take a huge amount of data ; and actually whittle it down into something more manageable; something that uses less of your disk space.
然后我们会讲生活中的应用程序,比方说压缩文件——,把大量的数据分解使其更易管理;,并占用尽量少的磁盘空间。
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It's a wonderfully compressed argument in which the Soul and the Heart make competing claims for Christianity and classical and literary wisdom.
这里压缩的争论很精彩,其中心和灵魂关于基督教义和,古典的文学的智慧提出相对立的主张。
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So, you might be asking how did he actually figure that out?
都压缩到很小的空间中了,你们可能会问他怎么知道直径的？
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All right, so you're saying it compresses the range.
你说的意思是压缩范围
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Therefore, it'll compress by an unknown x, which is equal to mg divided by the force constant of the spring.
因此它的压缩量为 x,也就等于 mg 除以弹簧的弹性系数
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These molecules of DNA, very long molecules of DNA, are condensed and packaged within the nucleus of every cell in your body.
这些DNA分子是非常长的,它们通过折叠等方式压缩形成染色体后,被装配在你身体内的每一个细胞内
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So I've got, this piston here is compressed, and I slowly, slowly increase the volume, drop the temperature.
这样，这个活塞就被压缩了，然后我再很慢很慢地增加它的体积，降低温度。
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In the opposite case, if you have a compression, then it's the opposite of expansion.
绝热压缩，的情况，与此相反。
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You've just done an adiabatic compression of the ideal gas, you can pretend there is an ideal gas.
这就是对理想气体的,绝热压缩，---我们把空气近似作为理想气体处理。
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And you can find these compressibility factors in tables. If you want to know the compressibility factors for water, for steam, at a certain pressure and temperature, you go to a table and you find it.
各种气体的压缩系数,想知道水或者水蒸气,在某个温度和压强下的，压缩系数，查表就行了，这是实际气体状态方程的。
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It's something that someone else wrote or maybe you wrote, but you can encapsulate all of your ideas or your functionality inside this thing called a function.
它是别人或你自己写的，但是你可以压缩你所有的想法,或者你这个东西里面的功能叫做一个函数。
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Your compressing it really fast, all right, so you're changing the pressure.
你把它压缩的非常快，好的，那么你改变了压力。
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Or in many kinds of gas refrigerators where you push a gas through a nozzle close to room temperature, what you find is that the gas coming out on the other side under lower pressure is cooler than the gas that went through on the other side.
或者在很多种压缩气体式冰箱中,你让气体通过接近室温的管口,你会发现从压力低的一边,出来的气体比通过,另一边的气体更冷,真正的冰箱实际上通过。
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This equation is telling you if you compress it, namely if x is negative, F will be then positive, because it's pushing you outwards.
这个方程告诉我们,如果压缩弹簧,即令 x 为负,F 就为正,因为推力的方向向外
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So, not only did Professor Sayer, who's in the Chemistry Department who put together this contraption for all of you, not only did she magnify the size of these gold nuclei, but she actually had to smoosh all of these atoms closer together then they normally would be.
化学系的Sayer教授把这些玩意放到一起，她不仅把金原子核的,尺寸放大了,还把原子核的间距压缩了,事实上，如果原子核的尺寸有这么大,我们需要另一个大教室，放这个原子核。
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We call that inversion because on one side you end up cooling if you compress.
因为在这个温度的一边,当你压缩气体时气体降温。
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And on the other side of that temperature you end up heating if you compress.
而在另一边的温度上,压缩气体将导致升温。
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So if you've got to pump that tire really a lot, then you're going to you're going to really feel a lot of heat there. The compression of the basically it's an adiabatic compression.
所以若果你给轮胎，打了很多的气，你会觉得你感觉,阀门那儿非常的烫，这种压缩,基本上是一个绝热的压缩。
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STUDENT: .
学生：不可逆压缩也可以：,通过快速的压缩实现吗？
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But you don't compress it so quickly that you're not in there reversible process so you compress that if you were to feel the temperature of the air and you can feel it through the nozzle gives you an idea of the temperature of the air inside your bicycle pump.
但是压缩速度,也不能太快,否则就不是,可逆过程了,这样当压缩气体时,从喷嘴可以感受到,内部气体的温度。
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I take V1 to V2 first, keeping the pressure constant at p1, then I take p1 to p2 keeping the volume constant V2 at V2. Let's call this path 1.
容易计算的路径，第一条路径，是首先保持压强不变,体积从V1压缩到。
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Step three to four isothermal compression, w2 delta u is going to be q2 plus w2.
第三步，到四点的等温压缩，Δu等于q2加。
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It also tells you that if you compress the spring, compress it means x is now-- x is measured from this position, where the spring is neither compressed nor expanded.
它还能告诉你,如果压缩弹簧,压缩就意味着现在 x...,x 是从这个位置开始算的,在这个位置弹簧既没有压缩也没有伸长
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We'll squeeze the middle to make them be more B's.
我们这样压缩会使更多的人得到B
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That's not literally true. I'm going to squeeze it a bit, I'm going to curve it a bit, so actually slightly fewer than a sixth will get straight A's, and fewer than a sixth will get C's and below.
但我可能稍微压缩下分数段,我会让分数段更有弹性,实际上略少于六分之一的人会得到A,略少于六分之一会得到C
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This spring is getting squashed on either side, and it'll squash by certain amount x, that depends on your mass, and that x will be turned into a motion of a needle and that'll read your mass.
这个弹簧两边都会受到压缩,压缩量为 x,它由你的质量决定,x 会转换成指针的运动,你从而可以读数
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You do it so quickly that the heat flow between the inside of the bicycle pump and the outside is too slow compared to the speed at which you compress.
我们用力很大,于是压缩得很快,打气筒内外热传递的速度,与之相比要慢得多。
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There's p1 here, and p2 here So I'm starting at p1, V1. I'm starting right here And I'm going to end right here.
它的分子间作用力很小,十分接近理想气体,对它做一个压缩过程。
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