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It was not like they were giving them a great deal, this was part of constructing their own business expansion.
并不是良心发现，而是为了生意扩张。
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You're allowed Cv comes out here for this adiabatic expansion, which is not a constant volume only because this is always true for an ideal gas.
绝热过程写下,这个式子是因为它对理想气体都成立，并没有用到等容过程的条件,只用了理想气体的条件。
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Is it 1820--the Missouri Crisis--in that settlement, and at least the beginnings now of a clarity of its expansion?
是从1820年的密苏里妥协案开始的吗,或者至少是从那时开始蔓延的吗
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Now, let's take a look at the world of the Mediterranean and see how Greek expansion worked.
现在,我们来研究地中海地区,看看古希腊是如何扩张的
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From 1983 to the present as you just said, the economy has a long period of smooth, robust expansion interrupted by two very mild recessions.
第二时期是从1983年至今，正如你所说，经济长时间处于,平稳强健的发展状态,而只出现了两次轻度衰退。
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The options are a very useful technology for managing risks and I think that we'll see a rapid--Over the next few decades, we'll see rapid expansion in the scope of options contracts traded on the exchanges.
期权是管理风险的,一个非常有用的技术,我认为在往后的几十年,交易市场上,我们将会看到期权合同的迅速发展
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T2 So this is an isotherm at some different temperature T2, a cooler temperature, because this was an expansion.
这个绝热过程的温度是,比T1低，因为这是个膨胀过程。
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OK, so we ended up last time, we talked about Joule-Thomson expansion, which is an irreversible expansion through a nozzle, through a porous plug, constant enthalpy expansion.
上节课，我们讨论了焦耳-汤姆逊，膨胀过程,也就是气体，通过毛细管。
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STUDENT: Just a quick question on some of the constraints, like isothermal, isobaric, isovolumetric expansion.
学生：我有个关于,等温，等压，等容等约束条件的小问题。
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What happened to the temperature in a Joule expansion in ideal gas?
对理想气体,焦耳-汤姆逊膨胀过程中温度如何变化？
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So expansion work, for instance, or compression work, is if you have a piston with a gas in it. All right, you put a pressure on this piston here, and you compress the gas down. This is compression work.
力乘以距离，就是功，功有许多种：,电可以做功,驱动电机与电风扇,磁力也可以做功。
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There are more people who can work to increase the production, but beyond that point there are more people to feed than the production can produce, and that leads to a desire for expansion of the land available for cultivation.
越来越多的人从事工作,生产力得以提高,但是一旦突破临界值,花费就要超过所得了,它导致了对土地扩张的需求
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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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How much energy are you going to get out, and how far are you going to be able to drive a car with this expansion, let's say, so that's the problem.
你能获得多少能量，利用这次膨胀,你可以把你的车开出多远，比如说这就是问题所在。
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