lower reach meaning in English

下游段
下游河段

In the upper reach the bed was dune covered and in the lower reach it was flat .
上游河段的床面为沙垄所覆盖，而下游河段则为平整床面。
The channel change of lower reaches of yellow river
黄河下游河道改道问题探讨
Risk analysis of dike breach in lower reaches of yellow river
黄河下游悬河决口灾害的风险分析与评价
Capacity in the henan section of the lower reaches of the yellow river
黄河下游河南段地下调蓄水库设想
Environmental changes of ejina region in the lower reaches of heihe river
黑河下游额济纳地区的环境演变

More: Next