發送短信 : Representative roughness height of submerged vegetation

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|  __ \\   |  ___|| | || | ||  /_   _//     ___   
| |  \ ||  | ||__   | || | ||   -| ||-     /   || 
| |__/ ||  | ||__   | \\_/ ||   _| ||_    | [] || 
|_____//   |_____||  \____//   /_____//    \__ || 
 -----`    `-----`    `---`    `-----`      -|_|| 
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