短语词组短语downwash correction 下洗流修正downwash recirculation 下洗回流downwash gradient 洗流梯度complete downwash 总下洗downwash distribution 下洗流分布downwash turbulence 下洗流downwash angle 下洗角;翻译downwash probability 下冲机率downwash flow 下洗气流;下洗流 返回 downwash