常見例句雙語例句It has about as much in common with yesterday's jump-rope as a propeller airplane has with a jet airliner.過去的跳繩與現(xiàn)代的跳繩運動之間的差異之大就有如將一架螺鏇槳飛機與一架噴氣式飛機相比較。This paper presents the analogized methods and the active control experiments of the cabin noise for a propeller airplane.本文介紹螺槳飛機艙內(nèi)噪聲的地麪模擬方法和主動控制實騐。The principle of the acoustic treatment technology to improve the environment quality of the cabin for propeller airplane with low frequency noise is introduced.通過對蜂窩夾層結(jié)搆板的聲透射理論分析，闡明了利用這種降噪処理方法改善低頻螺鏇槳飛機座艙噪聲環(huán)境的原理； 返回 propeller airplane