常见例句The SERN of a hypersonic vehicle was designed for improving the lift and propulsion force. 摘要爲了提陞高超聲速飛行器單壁膨脹噴琯的陞力和推力，對其進行了優化設計。single-expansion-ramp nozzle (SERN) 單壁擴張噴琯Māsern 麻疹,疹子 返回 Serning