擋水丁壩 的英文怎麼說
中文拼音 [dǎngshuǐdīngbà]
擋水丁壩
英文
repelling groin-
The first one among spur dikes group in regulation river reach has the most important holdback effect than the others
整治河段中第一根丁壩對水流的阻擋作用最大。Comparison of water level between measured and computation shows that the local head loss coefficient cannot give head loss by spur dike completely, and the effective area of passage is difficult to be ascertain. for this reason the two methods for water surface profile computation cannot predict the raise of water level upstream the spur dike accurately
計算結果表明，局部水頭損失系數並不能完全反映出由於丁壩阻擋所帶來的水頭損失，而丁壩附近的有效過水面積難以準確地確定，這些導致前兩種方法均不能很好地計算出丁壩上游水位的壅高值。
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