第一节天然气的性质及其渗流的基本微分方程 气体的状态方程 The state equation of gas 假想有一种气体,其分子的体积相对于整个气体所占体 积而言可忽略不计,分子之间或分子与容器壁之间没有吸引 力和排斥力,所有分子间的碰撞都是完全弹性的,就是说碰 撞中没有内能损失,这种气体称为理想气体。 a kind of imaginary gas: its volume of molecule can be omitted compared with the volume that the whole gas occupies; there is no attractive and repulsive force between molecules or molecule and walls of container all the collision between molecules is completely elastic, that is to say there is no loss of internal energy, this kind of gas is called perfect gas