Otherwise, the value R of the gas constant and value K of adiabatic exponent can not be determined and the subsequent calculation also can not be conducted.

否则，气体常数值，绝热指数值无法确定，后续计算也无法进行。

youdao

R They're related through the gas constant.

理想气体常数。

麻省理工公开课 - 热力学与动力学课程节选

I'm going to call it r. It's going to be the gas constant, and now I have r times t is equal to the limit, p goes to zero of p r.

如果去掉p趋于0的条件,在有限压强下都,保持RT=pV的关系。

麻省理工公开课 - 热力学与动力学课程节选