The Federal Reserve suggested again that short-term interest rates are likely to remain near zero for some time.
VOA: special.2009.01.31
Now for this experiment, this is a constant enthalpy experiment for the Joule-Thomson experiment, this is equal to zero.
对于这个实验,焦耳-汤姆逊实验,是一个焓不变的实验,焓变化等于0,所以我可以。
And the temperature scale that turns out to be well-defined and ends up giving us the concept of an absolute zero is the ideal gas thermometer.
比如理想气体温标,它有精确的定义,并能引出绝对零度的概念,今天我们就先来谈谈它。
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VOA: special.2009.02.03
And because there are a billion bytes accessible to us, that's-- essentially means well we can just call that byte number zero.
由于有十亿个字节的存储量供我们使用-,也就是说,我们有0号字节。
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VOA: special.2009.10.16
I want to point out that the zero energy is defined as when you have a naked proton -- where the electron has popped out -- that's what we've defined as zero energy up to this point when we're talking about single atoms.
我想指出,这里零点能的定义,是当我们只有一个裸露的质子,而没有电子时-,到目前为止对零点能一直采用这样的定义,当我们在讨论单个原子时。
Write to us at Special English, Voice of America,Washington,D-C, two-zero-two-three-seven,U-S-A.
VOA: special.2010.01.12
Well I have to go to the zero-th element, and say OK, gee, to get to the next element, I've got to jump this here. And to get to the next element, I've got to jump to here, and to get to the next element, I've got to jump to here, until I get there.
再回到第0个元素,好的,然后找下一个元素,跳转到这里,然后再下一个元素,跳到了这里,然后再下一个元素,直到我找到那个元素,这样,我有方法来保存变长的元素。
The Fed has reduced short-term rates to almost zero.
VOA: special.2009.08.28
We didn't even have income tax until 1913 when the Supreme Court allowed it, so it was zero, then it went up to 90%-- or actually it was 94% at the peak--and it came down to 15%.
直到1913年最高法院允许征收的时候,我们才开始征收所得税,开始税率是零,而后飙升到90%,然后它最高达到94%再降到15%
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VOA: special.2009.04.24
In the language, if I can switch to the language of modern economics, one could say that for Thrasymachus politics is a zero-sum game.
换个领域的词汇,让我用现代经济学的话来说,这可能将,Thrasymachus,式的政治,喻成一场零和游戏。
The anti-corruption group Zero Corruption says the government has shown a serious lack of political will to fight corruption.
VOA: standard.2009.04.18
I know the energy in this first pair would equal -e^2 That is just going to equal minus e squared over 4 pi epsilon zero r naught.
我们明白第一对的能量将会等于,等于,/4πε0,R圈。
That force is scheduled to be reduced from nearly by next October,and to zero by the end of 2011, although Secretary Gates said Friday there could be a follow-on agreement for some U.S.troops to stay, particularly elements of the Air Force.
VOA: standard.2009.12.12
And if that's equal to zero, that means that the Joule-Thomson coefficient for an ideal gas is also equal to zero. We're going to actually prove this later in the course.
说明理想气体的,焦耳-汤姆逊系数也等于0。,详细的证明过程,会在以后的课上给出。
This is equal to zero. So this irreversible process this Joule-Thomson process, is a constant enthalpy process. Delta h for this process is equal to zero.
等于0。所以这个不可逆过程,也就是焦耳-汤姆逊过程,是一个等焓过程。
but right now you're going to have to take it for granted. So, if the Joule-Thomson coefficient is equal to zero, just like we wrote, du = Cv dT du = Cv dT for an ideal gas, we're going to dH = Cp dT have dH = Cp dT for an ideal gas as well.
但是现在请你们应该把它看成理所当然的,所以,如果焦耳-汤姆逊系数等于零,就像我们写的,对于理想气体,我们也可以得到对于理想气体。
And so they defined them, p after many experiments, the limit of this 0 delta T delta p and the limit of delta p goes to zero as the Joule-Thomson coefficient.
他们定义了这些量,以及它们的范围,ΔT比Δ,Δp的极限趋近于,叫做焦耳-汤姆逊系数。
The absolute number that you assign to it is something that's arbitrary. You have to set what the zero is. And so there's a well-understood convention for what the zero is.
你指定给它的绝对值是有任意性的,你需要设定零点的位置,因此有一个经过充分研究的,关于设定零点的约定。
The Joule-Thomson coefficient is equal to zero.
焦耳-汤姆逊系数等于。
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