... channel improvement河道整治 channel length河道长度 channel realignment河道改道 ...
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河道边界总长度 Total Edge
·2,447,543篇论文数据，部分数据来源于NoteExpress
大部分这种河道被认为是在海平面相当低的时候形成的。 被发现的河道长度达2500英里（4000公里），宽超过数英里。
Most are believed to have formed when sea levels were much lower and the channels have been found to be up to 2,500 miles long and be several miles wide.
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