How do you measure the volume of a gas?
你如何计量气体的体积？
It is well known that when gas is cooled at a constant pressure its volume decreases.
众所周知，当气体在定压下冷却时，它的体积减小。
So this is the molar volume of the gas.
所以这是气体的摩尔体积。
Neon, a rare gas in the air, takes only fractional percentage point of the volume.
氖是空气中的稀有气体，只占空气体积的千分之几。
Or the volume of the gas minus the volume of the liquid you might as well ignore the volume of the liquid or of the solid.
或者气体的摩尔体积减去液体的摩尔体积,你可以忽略液体,和固体的体积。
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。
That's just the molar volume of the gas.
这是气体的摩尔体积。
So the first approximation is, you can realize that the molar volume of the gas is always much bigger than the volume of the solid or the liquid.
第一个近似是，你会发现气体的摩尔体积，远远大于固体，和液体的摩尔体积。
Now, if this is an ideal gas, we know that pressure is equal to nRT over volume.
如果这是一个理想气体系统，我们知道压强等于nRT除以体积。
For the ideal gas, we know that u is volume independent.
对于理想气体,我们知道u与体积无关。
And now we'll open it up V2 and just have the bigger volume, V2, and let the gas fill it.
现在我们打开它,有了更大的体积，然后让气体充满它。
Since they're much smaller, in terms of volume, than a regular airbag and use just a small canister for gas--similar to a CO2 cartridge--the belts don't get hot like airbags do.
它的体积明显要比通常安全气囊要小得多，因此它只需要小一罐气体——就像一小罐二氧化碳气瓶——并且不会产生热量。
Since they're much smaller, in terms of volume, than a regular airbag and use just a small canister for gas-similar to a CO2 cartridge-the belts don't get hot like airbags do.
它的体积明显要比通常安全气囊要小得多，因此它只需要小一罐气体——就像一小罐二氧化碳气瓶——并且不会产生热量。
So we're going to start with a mole of gas, V at some pressure, some volume, T temperature and some mole so V, doing it per mole, and we're going to do two paths here.
假设有1摩尔气体，具有一点的压强p，体积，温度，我们将让它，经过两条不同的路径。
If the proportion of imported pipeline gas falls, so does the pricing power of conventional suppliers, even if the overall volume they supply goes up.
如果进口天然气的比例下降了，传统供应商的定价权利也会下降，尽管他们整体上提供的天然气量上升了。
Avogadro was a professor of chemistry at the University of Turin who did a lot of work on gas laws, understanding the number of gas particles in a given volume at a given temperature.
阿伏加德罗是一个化学教授，在都灵大学，他做了很多关于气体定律的研究，了解气体微粒，在特定的容量和温度下的数目。
As more and more cars are produced and used, so the emission from their exhaust-pipes contains an ever larger volume of poisonous gas.
随着越来越多的汽车被制造和使用，这些汽车排气管里的排放物所包含的有毒气体的总量也越来越多。
If that changes, of course you know that the pressure in there is going to change at constant volume if the amount of gas in there is changing.
如果它发生了变化，当然在等体条件下，如果气体的总量，发生了变化，压强也会发生变化。
V So we can, instead of having the volume of the gas here, we can use the ideal gas law.
所以我们可以在这里不保留这个，而是代入理想气体方程。
And all it does is say that we're going to divide up our available volume into little bits that are basically the size of an atom or a molecule, or whatever the particle is in the gas phase.
它所做的是我们，将要把我们可利用的空间分割成小份，每小份大体上有一个原子，或一个分子的大小，或无论什么气体粒子的大小。
That is a good way to think about it if you are thinking of a gas maybe that can expand to fill out more volume.
一个很好的理解办法，就是想象，气体在膨胀，那它将会占据更多的空间。
As the rotor of rotation, the translation of the vortex each compression interior volume change constantly, realize the gas sucked and compression.
随着涡旋转子的平移转动，各压缩室内容积不断发生变化，实现对气体的吸人与压缩。
It is a device used to measure the pressure of a fixed volume of gas.
这是一种用来测量气体压强(在体积恒定下)的装置。
A gas has neither definite volume nor definite shape.
气体既无一定体积，又无一定形状。
Equivalent to sing the role of round piston reciprocating piston compressor, when the satellite gear shafts relative motion at the Beaufort, the closed volume decreases, the gas being compressed.
星轮的作用相当于往复活塞压缩机的活塞，当星轮齿在螺槽内相对运动时，封闭容积逐渐减小，气体受到压缩。
Therefore, cutting the purity of oxygen, volume, velocity, and oxygen flow shape on the gas cutting quality and cutting speed has important implications.
因此，切割氧的纯度、流量、流速和氧流形状对气割质量和切割速度有重要的影响。
Cylinders may be used individually or can be manifolded together to allow for larger gas storage volume.
钢瓶可以单个使用，或者并联起来获得更大的气体储存容积。
The volume of gas in tube a is three times that in tube b.
试管A内的气体体积是试管B内气体体积的三倍。
When the volume and between vent, oil and gas air mixture interlinked from vent discharge.
当齿间容积与排气口相通时，油气混合空气从排气口排出。
Based on the basic features of dynamic gas emission during boring process, a theoretical model for calculating the dynamic volume of gas emission from bore hole is set up.
基于钻孔过程中瓦斯动态涌出的基本特点，建立了钻孔瓦斯动态涌出量的理论计算模型。
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