The idea is to put pressure on food companies and restaurants.

VOA: special.2010.01.27

And so the photons hitting the wall actually put pressure on the wall, but the pressure is so low.

所以光子碰撞墙面,事实上在对墙加压，但只是压力很小。

麻省理工公开课 - 固态化学导论课程节选

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。

麻省理工公开课 - 热力学与动力学课程节选

every year, the government is under pressure to make an official recommendation on how much radiation is safe during a CT scan.

VOA: standard.2010.04.07

Water boils at different temperatures, depending on what the atmospheric pressure is; same thing for the freezing point.

丹佛和波士顿水的沸点，就不一样;,在不同的大气压下。

麻省理工公开课 - 热力学与动力学课程节选

Pressure from the president's liberal Democratic base is likely to have an impact on that decision, says former assistant secretary of state Teresita Schaffer.

VOA: standard.2010.07.30

And there is no work done on the surroundings because pressure is zero.

这里系统没有对环境做功,因为压强是零。

麻省理工公开课 - 热力学与动力学课程节选

Ms.Merkel says it is the intention of the international community "to raise the pressure" on the Afghans to begin taking over step by step.

VOA: standard.2009.09.07

This depends on the path. It tells you right here the path is constant pressure. These don't depend on the path, right. V doesn't care how you v get there. u doesn't care how you get there.

这由变化的具体路径决定,这个小脚标表明过程是恒压的,这些量都与具体路径无关,即不管是通过什么路径使得体积变化为Δ

麻省理工公开课 - 热力学与动力学课程节选

Columnist David Ignatius agrees with the president's move, saying Pakistan is a key factor in the new strategy,and the pressure on it must be increased.

VOA: standard.2009.12.06

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。

麻省理工公开课 - 热力学与动力学课程节选

As new U.S.and U.N.economic sanctions are a response step up the pressure on Iran's economy, Supreme Leader Ayatollah Ali Khamenei is urging his countrymen to change their habits.

VOA: standard.2010.07.23

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。

麻省理工公开课 - 热力学与动力学课程节选

"The tires are larger than you would find on a HUMVEE, so the ground pressure, which is really what matters, isn't all that much different from an up-armored HUMVEE,"

VOA: standard.2009.11.02

We're going to change the pressure above, Pext right now there's a p external, which is equal to p on the inside.

来改变外界条件，可以改变外界的压强，它将与气体压强p相等。

麻省理工公开课 - 热力学与动力学课程节选

Berman says the legislation would be only one point of pressure on Iran to roll back its uranium-enrichment program, which the United States believes is aimed at producing a nuclear weapon.

VOA: standard.2009.10.28

I'm pressing on the gas. So I expect that to be a positive number. The pressure is constant 0 p. The V goes from V1 to zero.

我们对气体加压,所以这应该是一个正数,压强是常数，p，V从V1变成。

麻省理工公开课 - 热力学与动力学课程节选

But there is pressure on the House to accept Senate provisions that would increase Medicare payroll taxes for individuals earning more than $200,000 annually, and families earning more than so-called high-value insurance plans.

VOA: standard.2009.12.25

It's the pressure the external world is applying on this poor system here.

V是气体初态和,末态的体积之差。

麻省理工公开课 - 热力学与动力学课程节选

On the Iran nuclear issue, Lavrov said while Moscow opposes harsh additional U.N.sanctions against Tehran, it does support,and is applying, "robust" political pressure to get Iran to return to negotiations with the major powers on its enrichment program.

VOA: standard.2009.05.07

The U.S.will need to put some pressure on India to make sure that India is helpful in every regard, because we are going to rely a lot on Pakistan to do a lot of heavy lifting and difficult work,"

VOA: standard.2009.12.06

Ileana Ros Lehtinen is the ranking committee Republican "It should be clear that unless we impose the maximum pressure on Iran, and this bill is a major step forward in that direction, the regime will continue its march toward acquiring nuclear weapons, dominating the Persian Gulf, and expanding its network of radical militants around the world,".

VOA: standard.2009.10.28