GM believes it can make that happen, in part with a new electric-and-gas hybrid.
VOA: special.2010.08.27
OK, this is only true for an ideal gas, and we went through that mathematically where the, with a chain rule.
这一关系只对理想气体成立,上节课我们,用链式法则推导出了这一关系。
Let's try it with a different equation of state, that isn't quite as simple as the ideal gas case.
考虑一个不同的状态方程,这状态方程不像理想气体状态方程那么简单。
His main targets were companies that supplied the public with water, electricity,and natural gas.
VOA: special.2010.08.05
Gas phase single atom. So we don't have to deal with work function or any kind of energies associated with some condensed form of matter.
气相的单原子,所以我们不需要再,处理功函数的问题,以及和凝聚态相关的能量问题。
Natural gas provides Americans with about one-fourth of their energy.
VOA: special.2009.10.23
Because here what we have is some atom that we're studying, in the case, it's going to be a gas, and we hit it with a photon that has some incident energy.
因为这里我们要研究的是一些原子,在这种情况下,一般是气态的,然后我们令一个,具有一定初始能量的光子打上去。
At that time, the solar energy business was such that it could not compete with oil and gas and oil.
VOA: standard.2010.01.31
the subject is accepted and extended "You'd win the war with a new kind of poison gas!"
大家喜欢这内容,因而继续,“你在一次新型毒气战争中胜出“
A secondary benefit is getting gas-guzzling old clunkers off the road and replaced with more fuel-efficient band new models.
VOA: standard.2009.05.18
He had a tube with electrodes potted in it filled with atomic hydrogen. And by applying a voltage, he was able to get the gas to glow.
那是个装满了氢原子并含有电极的管子,通过增加一个电压,他让气体燃烧起来了。
But with defective brakes, sticky gas pedals, and loose floor mats prompting recalls of Toyota cars worldwide, that reputation is falling fast.
VOA: standard.2010.02.15
This quantity is exactly zero for an ideal gas and we'll discover why eventually it has to do with what we mean by an ideal gas it turns out.
对理想气体它是零,这点我们接下来会知道是,为什么,这与为什么我们叫它理想气体有关。
Analysts say the country needs to adopt the 2010 budget to resume cooperation with the IMF and pay for natural gas imports from Russia.
VOA: standard.2010.02.14
All right, then as I push through, I'm going to start with all of my gas on this side, and at the end I'm going to have all the gas on the other side.
好的,随着我的推动,刚开始这些气体全在这一边,到了最后,这些气体全在另一边。
Switzer says that the industrial nature of gas drilling, with heavy truck traffic and noise, and occasional wastewater and chemical spills,has transformed their peaceful country life.
VOA: standard.2010.01.02
So, you do this measurement, you measure with the gas, you measure the pressure and the molar volume.
现在让压强趋于,现在测量气体的压强,和摩尔体积。
They cite Russia's brief war with Georgia and Russia's confrontations with Ukraine over natural gas supplies last year as reasons to remain skeptical about the Kremlin's intentions.
VOA: standard.2009.09.17
I want to cool a gas with a Joule-Thomson experiment, what temperature do I have to be at?
给气体降温时,需要到达什么温度?
Those we spoke with say price still determines where they buy their gas.
VOA: standard.2010.06.10
The atoms or molecules in the gas don't know that there are other atoms and molecules in the gas, and then you end up with this universal property. All right, so gases that have this universal property, even when the pressure is not zero, those are the ideal gases.
可以忽略,这样就得到了理想气体的性质,在有限压强下,依然能保持这些性质的气体,被称为理想气体,本课中我们把大部分气体,都作为理想气体来处理。
Police responded by firing tear gas and beating back protesters with batons.
VOA: standard.2009.03.15
I would say with the aid of an energy level diagram explain the fact that helium is found as atomic gas and not molecular. How about this one?
我要说的是,在能级图的帮助下,可以解释氦气是单原子气体,而不是分子气体这一事实,那么这个呢?
They allege that the company's drilling polluted their water with chemicals,metals and methane, the main constituent of natural gas, causing explosions as well as gastrointestinal and neurological illness.
VOA: standard.2010.01.02
All the things we are talking about here are with reference to the gas phase.
所有我们在这里谈到的,都和气相有关。
"It would be easier to compete with the gas companies,I guess."
VOA: standard.2010.02.23
That is, ideal gas. And see how it works with that.
然后看我们上面的步骤如何给出有用的结果。
Even with poor gas mileage on most RV units, these vagabonds can travel for about one-fifth what others pay who fly, buy meals in restaurants, and stay in motels.
VOA: standard.2010.03.01
This is ionic radii with a noble gas configuration.
这是稀有气体的离子半径。
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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