In gasdynamics and chemical lasers, the supersonic diffuser plays an important role in the pressure recovery system.

在气动和化学强激光器系统研制中，压力恢复系统扩压器设计技术研究具有重要的工程应用价值。

Chemical laser is characteristically energized by an exoergic chemical reaction which produces the nece ssary population inversion of lasing species.

化学激光器是以释能化学反应提供能源, 并且以化学反应产生粒子数反转为基础的。