downstreamadv.朝下游方向adj.顺流的
downstream migration顺流回游
downstream cofferdam下游围堰
downstream regulatio下游调节
downstream injection下流喷射
downstream filtering下行滤波
downstream pier nose墩的下游端点
downstream resistance下游气道阻力
downstream transition下游渐变段
downstream investment后阶段投资,下游投资
downstream bank slope下游岸坡