常見(jiàn)例句雙語(yǔ)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(shí)的氣動(dòng)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?dú)鈩?dòng)噪聲的混沌特性,并應(yīng)用混沌理論進(jìn)行了直升機(jī)尾槳?dú)鈩?dòng)噪聲信號(hào)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(dòng)噪聲源逐漸超越輪軌噪聲成為高速列車最主要噪聲源。nvc.sjtu.edu.cn 返回 aerodynamic noise