河流侵蚀基准面 base level of stream; baselevelofstream; river base level 局部侵蚀基准面 local base level of erosion ..
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river base level
河底面
以上为机器翻译结果，长、整句建议使用 人工翻译 。
At this sedimentary period, the water in Lake Basin began to recede fleetly, the base level of erosion grew down, the schlep ability of river grew up, and the supply of source was abundant.
在此沉积时期，湖盆开始较快速地水退，侵蚀基准面下降，河流搬运能力增大，物源供给充足。
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