常見例句雙語例句It is very important to reduce the aerodynamic drag and noise for a transport vehicle.減小汽車行駛中的空氣阻力，抑制行駛時的氣動噪聲具有十分重要的意義。Chaos characteristics of the aerodynamic noise are discussed and the aeroacoustic noise signals on helicopter scissors tail rotor is analyzed by the chaos theory.研究剪刀式尾槳氣動噪聲的混沌特性，竝應(yīng)用混沌理論進行了直陞機尾槳氣動噪聲信號分析。With the constant increase of the trains' speed, the aerodynamic noise gradually succeeds the traditional track noise and becomes the main noise source of the high-speed trains.隨列車行駛速度逐年提高，氣動噪聲源逐漸超越輪軌噪聲成爲(wèi)高速列車最主要噪聲源。nvc.sjtu.edu.cn 返回 aerodynamic noise