固液混合火箭发动机的燃面后退速率低是制约该类发动机应用的主要因素。

The low fuel regression rate in hybrid motor is the principal factor affecting the application of the motor.

youdao

固液混合火箭发动机的燃面后退速率低是制约该类发动机应用的主要因素。

The low fuel regression rate in hybrid motor is the principal factor affecting the application of the motor.

youdao