本文对惯用的平衡压力定义作了修订.在此基础上阐述了平衡压力的性质与用途,并讨论了以下三个问题:(1)在燃烧室压力的变化率(dp/dt)≠0时,平衡压力有没有定义;(2)在(dp/dt)=0时,燃烧室压力是不是平衡压力;(3)在当今电子计算机广泛使用的情况下,平衡压力的概念还有没有用. In this paper, the definition of the traditional equilibrium pressure is revised, and on the basis of this, the nature and application of the equilibrium pressure is expounded and the following three problems are discussed: (1) When the rate of pressure change in the combustion chamber (dp / dt) , Is there any definition of equilibrium pressure; (2) whether the pressure in the combustion chamber is equalized at (dp / dt) = 0; and (3) the concept of equilibrium pressure is not useful in the widespread use of electronic computers today.