常見(jiàn)例句The SERN of a hypersonic vehicle was designed for improving the lift and propulsion force. 摘要為了提升高超聲速飛行器單壁膨脹噴管的升力和推力，對(duì)其進(jìn)行了優(yōu)化設(shè)計(jì)。single-expansion-ramp nozzle (SERN) 單壁擴(kuò)張噴管Māsern 麻疹,疹子 返回 Serning