local head loss 中文意思是什麼

local head loss 解釋
局部水頭損失
  • local : adj 1 地方的，當地的，本地的。2 局部的。3 鄉土的，狹隘的，片面的。4 【郵政】本市的，本地的；【鐵...
  • head : n 1 頭，頭部，首。2 頭腦，才能；智力，想像力，理解力。3 前部，上部；頂端，尖突部；船長；（書頁等...
  • loss : n. 1. 喪失；丟失，遺失。2. 減損，損失，虧損（額）；損耗；減少，下降。3. 失敗；輸掉。4. 錯過；浪費。5. 損毀；【軍事】傷亡；〈pl. 〉 傷亡及被俘人數。
  1. The value of correction coefficient of kinetic energy increases as a result. the water surface profiles of flume experiments are computed by three different methods : adjusting the local head loss coefficient, deduction of backwater area, and application of backwater expression

    隨后結合實測水位資料，通過採用調整局部水頭損失系數、扣除回水面積以及壅水公式等不同的水面曲線計算方法對實驗水槽一維水面曲線進行計算。
  2. 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。
  3. Actually, in the tube engineering, the proportion of the loss of local water head in the loss of pipeline water head is big

    在實際管道工程中，閥門閥道的局部水頭損失占管路水頭損失的比例是相當大的。
  4. Abstract : the function expression for coefficient of pipeline ' s local head loss was presented through optimizing fitting to coefficient values listed in tables. the fitting accuracy is acceptable

    文摘:採用優化擬合法通過對圖表中有關數值的擬合，給出了管道閥件阻力系數的函數表達式，具有較高的擬合精度。
  5. Ulteriorly, considering the local head loss in inlet opening and pipes junction plays more important role in the calculative results of water hammer pressure calculation of the short pipeline system

    考慮進口及多管道連接處的局部水頭損失對短管道系統水擊壓強的計算結果影響較大。
  6. These phenomenon jeopardize the condition of the project seriously, and it is the main factor that influences the loss of local water head

    這些現象嚴重危害管道的工況，並且是影響閥道局部水頭損失的主要因素。
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