毛管壓力水頭 的英文怎麼說

中文拼音 [máoguǎnyālìshuǐtóu]
毛管壓力水頭 英文
capillary pressure head
  • 毛 : hairdownfeatherfur
  • 管 : Ⅰ名詞1 （管子） pipe; tube 2 （吹奏的樂器） wind musical instrument 3 （形狀似管的電器件） valve;...
  • 壓 : 壓構詞成分。
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 水頭 : waterhead; head; flood peak水頭落差 head fall; 水頭坡降 water table gradient
  1. Many factors have effect on irrigation uniformity. with the growing of pressure, how is irrigation uniformity of trickle irrigation varying on different condition of the diameter of drip line, the distance of emitters, the length of drip line, the style of emitters, the flux ratio of emitters and the face gradient of little irrigation district. the consequence shows that pressure has puny effect on irrigation uniformity

    滴灌系統的灌水均勻度受眾多因素的影響，本文通過毛管的管徑、滴頭間距、毛管的管長、灌水器的類型和灌水器的流量系數不同的情況下，灌水均勻度隨壓力水頭變化模擬結果顯示，壓力水頭對灌水均勻度影響非常小。
  2. ( 4 ) through the hydraulic property experiment of micro - hole lateral pipes of simple sdi in air, it was found that the average pressure of 60 mitre length lateral pipes was at the position of per 40o / o ~ ~ ~ 50 % of the effectual pipe length from the fist micro - hole, major pressure - loss was occurred at the ahead part of half pipe. the pressure uniformity reduced with orifice aperture ? increasing, and the relationship between pressure uniformity and initial water pressure was poor. running under the initial water pressure of 1. 5 meter, the discharge uniformity reduced with orifice aperture ? increasing, and when the orifice aperture smaller than or equal 1. 0mm, irrigation uniformity could achieve above 0. 6

    （ 3 ）通過對空氣介質中簡易地下滴灌的微孔毛管試驗研究發現： 60m管長的毛管平均壓力水頭的位置基本上在距第一孔口的有效管長40 - 45的地方；大部分水頭損失發生在毛管的前半部分；壓力均勻度隨孔徑的增大而減小，但與初始工作水頭關系不密切；在1 . 5m以下的工作壓力下運行，沿程出流均勻度隨孔徑的增大而降低，當孔徑不大於1 . 0mm時，灌水均勻度可以達到60以上；當孔徑大於等於1 . 2mm時，灌水均勻度低於50 。
  3. In a short, answer to the optimizing length of porous pipe is very important in optimum design of trickle system

    毛管和支管的直徑以及設計壓力水頭一定的情況下，大於或小於毛管的經濟長度，都會使滴灌系統的費用增加。
  4. With the in - built drip irrigation belt and thin wall chip irrigation belt taken as examples, the flow rate distribution and hydraulic losses of drippers along capillary tubes at different inlet pressures were measured under the conditions of horizontal slope and slope gradients of 0. 5 % and 1 %, then the uniformity of capillary tubes was calculated at different slope gradients and pressures in consideration of the manufacture deviation of drippers

    摘要以內鑲式滴灌帶和薄壁滴灌帶為研究對象，測定了平坡、 0 . 5 %坡度和1 %坡度時，不同入口壓力下滴頭沿毛管的流量分佈和水力損失，並結合滴頭的製造偏差，計算得出不同坡度和壓力條件下滴灌毛管的均勻度。
  5. The outcome shows that the ratio of the distance of average pressure position from the entrance to water of drip line to the length of drip line varies from 0. 3 to 0. 4

    模擬結果顯示，毛管的平均壓力水頭在距離毛管進水頭0 . 3 0 . 4范圍內變動。
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