词汇	four-speed gear box
释义	four-speed gear box 四速变速箱
随便看	radio wave propagation characteristic radio wave propagation during reentry radio wave propagation loss radio-wave propagation prediction radio-wave propagation simulation radio wave propagatology radio-wave radiation radio wave ray radio-wave ray radio-wave reception radio wave reflection radio-wave reflection radiowave reflection method radio wave reflection method radiowave refraction radio wave refraction radio wave refraction correction radio wave refraction error radio-wave refractive correction radio-wave refractive index of air radio wave refration radiowaves radio waves Radio waves radio-waves