catchment channel 中文意思是什麼
catchment channel
解釋
引水道-
When catchment area, average channel gradient and catchment shape factor of designed culvert or bridge are known, a user can be convenient to get local parameters c, e and b from standard contour charts and easy to calculate flood flow just by a calculator. design period of flood flow is enormously shortened as well as a high precision. estimated flood flow through culvert or small bridge by new calculation model is generally less than by traditional methods, so that much cost is cut down a s reducing the span of culvert or small bridge
以75000km ~ 2的川中丘陵地區為試點研究區，繪制了該地區新模型的參數等值線圖，率定了不同設計頻率的改正系數，使設計者只需在地形圖上獲取集水面積，河道平均坡降和流域形狀系數，在參數等值線圖上查得橋涵所在地的相應參數，使用計算器即可迅速計算出設計流量，大大縮短了設計周期，且精度較高，設計的洪水流量一般低於傳統方法，從而可減小橋涵跨徑，節省投資。 -
Through examination of the recession limbs of the observed hydrographs, during periods with no rain and thus no surface runoff, one can determine the value of. for this catchment, a value of 0. 8 is obtained. the simulated subsurface runoff at each grid is routed to the outlets through a unit - hydrograph method for overland flow and the linear saint - venant equation for channel flow to get the discharge at xixian station
對所研究的流域而言，經過估算消退系數為0 . 8 .耦合著這兩種不同地下徑流機制的clm模型都可以計算出每個網格的地表地下徑流深，採用dag lohman 34 ， 35發展的匯流模型進行匯流由於是研究地下徑流，所以取每個網格的地表徑流為0 ，該模型採用單位線計算坡面匯流線性聖維南saint - venant equation進行河道匯流 -
Flowing through the heart of sha tin and out into tolo harbour through the shing mun channel, the river has a catchment area of 37 square kilometres, the largest in the eastern new territories. its major tributaries include the kwun yam shan stream, tin sum nullah, fo tan nullah, tai wai nullah and siu lek yuen nullah
城門河的支流匯集於沙田市中心，經城門河道流到吐露港，河流集水區佔地37平方公里，面積為新界東部之冠，城門河的主要支流包括觀音山溪田心明渠火炭明渠大圍明渠及小瀝源明渠。 -
The kai tak nullah is also a storm channel situated upstream of the old kai tak airport in south - east kowloon. its catchment includes some densely populated areas such as san po kong, diamond hill, tsz wan shan, wong tai sin and kowloon city
啟德明渠正是一條位於九東南部舊啟德機場上游的雨水渠，它的集水區涵蓋多個人口稠密地區，包括新蒲崗鉆石山慈雲山黃大仙和九城。
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