灌水器 的英文怎麼說
中文拼音 [guànshuǐqì]
灌水器
英文
douche-
More than 50 % of cane land is irrigated, mainly by sprays or flooding of furrows. use of low - pressure overhead irrigators and drip systems is increasing
採用噴霧灌溉或渠灌的甘蔗地超過50 % ，使用低壓高架灌溉器和滴水灌溉系統的正在增加。Manufacture of dripping irrigation emitter with lower water pressure
微壓滴灌灌水器的研製Wells for irrigation were mainly made from brick of earth, and water was bailed by mandarin duck pot, windlass, mill wheel and so on
二十世紀上半葉華北灌溉用井主要是磚井及土井，汲水器有桔棒，鴛鴦罐，轆護，水車等。Low pressure trickle irrigation is popular with farmers. currently, the study direction of drip system is to develop low pressure emitters
當今，研製大流量的壓力補償式灌水器是低壓滴灌研究的方向。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。Through calculating annual expenses and analyzing investment risk, an optimization model firstly put forward. the coefficient of investment profit of the irrigation system, which includes pipe distribution networks, drop irrigation device, is minimized. the coefficient is optimization design ' s target function which is by the genetic algorithms to solve
在系統優化方面，單獨作為一個模塊用vc + +實現，本文首次提出了以包括管網、灌水器、水泵、電機等設備在內的微灌系統的益本比最大為目標函數，利用遺傳演算法求解的方法。Then, how should we determine the average amount of dripper in little irrigation district ? an operational measure is to make average pressure position of drip line certain and determine the flux of emitters in average pressure position
在灌水小區內，能夠準確及時的測定灌水小區內灌水器的平均灌水量，才能精確控制灌水小區的灌水量。Experimental study of physical clogging factor of labyrinth emitter caused by muddy water
渾水引起迷宮灌水器物理堵塞因素實驗研究Micro - irrigation emitters. drips
微灌灌水器.滴頭Micro - irrigation emitters. micro tubings, micro tapes
微灌灌水器.微灌管微灌帶Plane model of labyrinth path drip irrigation column emitter
圓柱型迷宮式流道滴灌灌水器平面模型試驗研究( 3 ) based on the experiments data, it has been found that if the emitter discharge of sdi was little, the depth of pipe buried should be shallow, and the distance between two micro holes should be chosen to equal or close the distance between two lateral pipes, if the emitter discharge of sdi was great, the pipe may be buried deeper, and the distance between two micro holes could be greater than the distance between two lateral pipes
根據一維土柱近似的濕潤輪廓線初步選定了工程設計參數。在地下滴灌灌水器出流量較小情況下，埋深應淺，孔距應選擇和毛管間距相等或接近；出流量大時，埋深可深，孔距大於毛管間距仍可獲得較均勻的土壤水分分佈。Abstract : problems caused in designing and management including configuring regulating devices, deciding spaces of the last pipelines, and working - out irrigation scheme in reason using drip irrigation in green houses and in covered lands are raising in recent years, theose not only affect benefits but also result in failing of projects
文摘:近幾年來溫室、大棚種植蔬菜採用滴灌技術的越來越多，但有些工程無論設計上、管理上都存在一些問題，包括調壓設備的合理配置，按土壤、作物、灌水器及滴灌總水量合理確定毛管（或滴灌帶）的間距，以及按大棚蔬菜的耗水特性合理確定灌溉制度等，上述各項確定的不合理，不但直接影響效益，嚴重時可導致工程失敗，值得重視。Development of automatic testing system for micro - irrigation emitters
微灌灌水器自動檢測系統的研製Micro - irrigation emitters. micro sprayers
微灌灌水器.微噴頭Experimental study on emitter structure parametric design based on laser rapid prototyping technology
基於激光成形技術的灌水器結構參數化試驗研究Pressure discharge relation of the simple orifice is exponential in air and soil. the flow regime of simple emitter is situated between laminar and turbulent
簡易地下滴灌灌水器流量壓力關系在空氣和土壤介質中都呈現較好的冪函數關系，其流態介於層流和紊流之間。The content and results analysis in this paper conclude the following four parts : ( i ) an equipment for testing the hydraulic performance and anti - clogging performance of emitters has been developed
本文的研究內容和實驗結果分析主要包括5個部分： （ 1 ）研製開發了一種灌水器水力性能和抗堵塞性能實驗測試裝置。( 2 ) the emitter discharge of simple subsurface drip irrigation is greater than the infiltration rate after formed saturate loop in the short time. infiltration rate under subsurface drip irrigation is not only affected by soil texture, original soil moisture content and soil bulk density et al, but also by emitter discharge, which affect by water pressure
（ 2 ）地下滴灌的灌水器出流量一般在較短時間內形成飽和圈后，土壤入滲速率不僅受到土壤質地、土壤初始含水率、土壤容重等因素的制約，而且還與影響灌水器出流速率的壓力水頭有關。For the optimization of the water distribution pipeline network system, we use the least annual cost of the whole micro - irrigation system, the variables include nozzle, pipeline, water pump, electromotor and so on, genetic algorithm was applied
在系統優化方面，本文採用以包括灌水器、管網、水泵、電機等設備在內的微灌系統的年費用最小為目標函數，利用遺傳演算法求解。分享友人