perfect gas constant

例句：

1. 1. The ideal gas constant is a fundamentalconstant in thermodynamics.
   理想气体常数是热力学的一个基本常数。
2. 2. Theperfect gas constant is used to calculate thevolume of a gas at a given temperatureand pressure.
   完美气体常数用于计算在给定温度和压力下的气体体积。
3. 3. Theperfect gas constant is also known as theAvogadro constant.
   完美气体常数也被称为阿伏伽德罗常数。