perfect gas constant meaning in English

理想气体常数

In chapter 2 , the meteorological knowledge , data and the methods of the data processing , related to the study on the atmospheric loads , are simply presented . the model for the perfect gas constant , describes by the relative moisture , is developed . the influences of the variation in the vapor component in the atmosphere on the perfect gas constant are evaluated by using the changing characteristics of the temperature on the surface , its spatial gradient and the barometric pressure
第二章：简要介绍大气负荷研究所需的气象科学知识、资料及其数据处理方法；建立相对湿度表示的大气比气体常数模型，利用地面温度和空间垂直温度梯度、压力变化的规律估算大气水汽组分变化对比气体常数的影响；对中国及邻区的地面气压记录进行了预处理和网格化