secondary air nozzle的意思|示意

The nozzle flow is composed of the main gas stream and the secondary air stream in order to simulate the nozzle of turbofan engine.

喷管中的气流由主流燃气和次流空气组成，用以模拟涡扇发动机的喷管。

Selection of the primary and secondary airflow rate, the guide Angle of the blade, the primary air ratio as well as the material for manufacture of the burner nozzle are given.

然后介绍了一、二次风速，旋流叶片的导角，一次空气比例系数等参数的选择及制造烧嘴的材料。