现在让压强趋于，现在测量气体的压强，和摩尔体积。

So, you do this measurement, you measure with the gas, you measure the pressure and the molar volume.

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应用热式质量流量计直接测量气体质量流量。

Applying thermal mass flowmeter to measure gas mass flow directly.

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在工业上广泛使用孔板流量计测量气体体积流量。

It has been widely accepted by the industry for measuring gas volumes.

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But if you touch the valve going into your tire which basically measures the temperature of the air going into your tire, that is getting hot, right.

以至于浑身发热,如果你摸气筒的阀门,相当于近似测量了进入轮胎的气体的温度，它会很热，对吧。

麻省理工公开课 - 热力学与动力学课程节选

And again there, too, you saw an experimental result you were presented with that says, well at least to the extent that it could be measured, it was obviously getting very small.

再一次，你看到了一个,你经知道的实结果，至少在实验测量的范围内，对理想气体条件下的气体这一项很小。

麻省理工公开课 - 热力学与动力学课程节选

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。

麻省理工公开课 - 热力学与动力学课程节选