通过更加符合空气动力学的形状和一个曲线尾巴的飞机结构，这些发动机将使飞行更有效率，同时会将绝大部分的噪音传向空气上方。
With a more aerodynamic shape and framed by a curved tail plane, these engines would make for a more streamlined aircraft, as well as directing most of their noise upward.
新型设计的机壳以及依照空气动力学设计的叶轮，能够减少振动和噪音。
Special housing could reduce noise and vibration, best design on the impeller base on aerodynamics.
声道的空气动力学，紊流噪音，瞬间释放，突发音。
Aerodynamics of the Vocal Tract, Turbulence Noise, Abrupt Release, Bursts.
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