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liuxiaqing

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【答案】应助回帖

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RXMCDM: 金币+1, 多谢应助! 2014-09-13 19:46:47
reben_1987: 金币+100, 翻译EPI+1, ★★★★★最佳答案, 十分感谢 2014-09-14 11:11:04
River regulation works usually use stone blocks with cement mortar for revetment and curve cut-off to harden and canalize the natural slope and the river morphology of the original natural river course. The measured discharge data lead us to believe that river canalization makes roughness coefficient form two distinct distributing ranges, and the smaller the roughness coefficient, the higher the flow velocity.
2楼2014-09-13 18:53:20
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