水及水蒸气热力性质参数软件（转），各类热力性质参数函数-The nature of the water and steam heat parameter software (rpm), various thermodynamic properties of parametric functions

proe二次开发用的资料，可作为参考使用，用于参数化设计、建立平面坐标系等-proe secondary development of the information can be used as a reference for parametric design, build plane coordinate system, etc.