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1·The flow characteristic of rarefied gas is very complicated in its dynamics problem.

稀薄气体的流动是一个复杂的稀薄气体动力学问题。

2·The relationship between the non-equilibrium phenomena and rarefied gas dynamics is discussed.

讨论了非平衡现象与稀薄气体动力学的关系。

3·The flight of space vehicles, probes and shuttles set new demand on gas dynamics, including rarefied gas dynamics.

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。

4·It is well-known that rarefied gas plays a very significant role in the heat transfer under the condition of vacuum.

已知对于真空下的传热稀薄气体起着非常重要的作用。

5·The Direct Simulation Monte Carlo method is a useful numerical tool for solving fluid flow and heat transfer problem of rarefied gas.

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。

6·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.

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。