The lake rose, intensifying pressure against the dam.

VOA: standard.2010.04.26

Of course in the reversible case, you're always pushing against an external pressure, which is essentially equal to the internal pressure.

当然在可逆的情况下，外压力，总是，等于内部压力。

麻省理工公开课 - 热力学与动力学课程节选

Let's imagine maybe instead we just immediately dropped the pressure let the system expand against the lower pressure.

现在假设,我们很快地降低压力,让系统在低的外压力下膨胀。

麻省理工公开课 - 热力学与动力学课程节选

As an example,he says Soviet war veterans exert political pressure against negative portrayals of events they participated in and that the Kremlin has its own interest in creating the historical truth commission.

VOA: standard.2009.12.25

So the expansion against lower pressure draws less heat from the hot reservoir right.

所以压强较低时的膨胀,从高温热源吸收的热量更少。

麻省理工公开课 - 热力学与动力学课程节选

Pakistan is an ally in the U.S.-led war against terrorism and has been under pressure from Washington to intensify efforts to root out extremists blamed for launching attacks on coalition forces across the border in Afghanistan.

VOA: standard.2009.12.11

Pressure is when you have one of these hard spheres colliding against the wall.

这是一个小球,它与墙发生碰撞。

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

It's not pressing against as much pressure.

要小些。

麻省理工公开课 - 热力学与动力学课程节选

This is the pressure that you're applying against the piston, not the pressure of the gas.

最后等于Pext乘以体积,面积乘以距离得到体积。

麻省理工公开课 - 热力学与动力学课程节选