讨论了非平衡现象与稀薄气体动力学的关系。
The relationship between the non-equilibrium phenomena and rarefied gas dynamics is discussed.
稀薄气体的流动是一个复杂的稀薄气体动力学问题。
The flow characteristic of rarefied gas is very complicated in its dynamics problem.
已知对于真空下的传热稀薄气体起着非常重要的作用。
It is well-known that rarefied gas plays a very significant role in the heat transfer under the condition of vacuum.
求解过渡领域的流动问题，是稀薄气体动力学的核心内容。
It is a kernel in the ratified gas dynamics to solve the flow problem in the transitional domain.
直接模拟蒙特卡罗方法是一种求解稀薄气体流动换热新的数值方法。
The Direct Simulation Monte Carlo method is a useful numerical tool for solving fluid flow and heat transfer problem of rarefied gas.
飞船、宇航探测器、航天飞机等复杂外形航天器给气体动力学，包括稀薄气体动力学提出了新的要求。
The flight of space vehicles, probes and shuttles set new demand on gas dynamics, including rarefied gas dynamics.
因此，结合分子蒸馏液膜传质和传热过程，研究蒸发区间稀薄气体的运动规律对工艺优化和分子蒸馏器放大生产具有十分重要的意义。
Therefore, combined with mass and heat transfer in liquid film, it is important for optimizing operation condition and enlarging equipment to study rarefied gas flowing in distillatory.
由于尺度效应、表面效应等因素的影响，稀薄气体流动表现出自己的特点：流动涉及的表面积与体积之比增强、梯度参数效应，表面效应，流体极性等。
Some negligible factors in the classical fluid dynamics, such as, surface force, surface-volume ratio and the effects of gradient parameters, become very important for its study.
太阳风是一种高速但非常稀薄的从太阳向外流动的带电气体离子氢、氦流。
The solar wind is a high-speed but extremely tenuous stream of electrically charged gases—ionized hydrogen and helium—that flow outward from the sun.
当高速行进的超新星冲击波与稀薄的星际气体相撞时，气体受到压缩和加热，因此而发光。
As the supernova blast wave slams into tenuous clouds of interstellar gas, the resulting collision heats and compresses the gas, causing it to glow.
日冕的电离气体（又叫等离子体）不仅非常炙热，而且异常稀薄，其密度还不到组成太阳主体的氢气密度的十亿分之一。
As well as being very hot, the ionised gas of the corona (called plasma) has a superthin consistency. It is less than a billionth of the density of the hydrogen that makes up the main ball of the Sun.
近代真空技术作为一种实用的基础技术，由于它提供了稀薄的气体氛围和清洁的环境条件，获得了越来越广泛的应用。
The modern vacuum technology as a practical basic skill has been used more and more widely, because it can produce rare gas and clean environment.
空气似乎很稀薄，好像在混合的气体中剩下的氧气很少。
The air seemed thin as though its combination of gases had little oxygen left.
稀薄碱金属原子气体的BEC的实验实现使得此类现象的研究摆脱了理论与实验结果不能精确比较的局面。
The experimental realization of BEC in dilute alkali atom gases makes it possible that the results of theoretical and experimental studies can be compared rigorously.
空气似乎很稀薄，好像在混合的气体中剩下的氧气很少。 。
Thee air seemed thin as though its combination of gases had little oxygen left.
太空中有各种各样的原子，只不过有时它们彼此相距甚远而已。即使是这样稀薄的气体也会使空间的总引力增大！
There are all kinds of atoms out there, albeit sometimes far apart and this thin gas adds to the collective gravity budget, too!
火星上的大气层很稀薄，只含有少量的氧；而金星上的 大气层，则是由我们几乎无法呼吸的气体构成的。
The atmosphere on Mars is very thin and contains very little oxygen, while that of Venus is made up of gases which we could not possibly breathe.
空气似乎很稀薄，好象在混合的气体中剩下的氧气很少。
The air seemed thin as though its combination of gases had little oxygen left.
空气似乎很稀薄，好象在混合的气体中剩下的氧气很少。
The air seemed thin as though its combination of gases had little oxygen left.
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