各类中学生物理竞赛试题中常常出现有关于水的饱和蒸气问题的试题，由于学生对饱和蒸气问题认识模糊，抓不住要领，往往不能解答相关的竞赛试题，如果能抓住以下几点，就能很好地理解相关内容，从而顺利解决有关问题．一、抓住在温度一定时，饱和汽压的大小与饱和气的体积... Questions about the saturation vapor of water often appear in the examination questions of various types of middle school students in the physical competition. Because students have a vague understanding of saturated vapor problems and cannot grasp the essentials, they often cannot answer related competition questions. If they can grasp the following points, Can well understand the relevant content, so as to successfully solve the problem. First, seize the size of the saturated vapor pressure and the volume of saturated gas at a certain temperature...