Evolution characteristics of riverbed in fluctuating backwaterarea.
变动回水区河床演变特性。
2
During the construction of Three Gorges Project, in some part of the river, due to the change of water level in fluctuating backwaterarea, the difficulty of navigation is intensified.
三峡工程施工期变动回水区河段由于水位变化，使部分河段碍航情况加剧。
3
Far from an austere backwater, the intergalactic medium (IGM) is turning out to be the central staging area for cosmic evolution.