irrigation pipeline 中文意思是什麼
irrigation pipeline
解釋
灌溉管道- irrigation : n. 1. 灌溉；水利。2. 【醫學】沖洗（法），〈pl. 〉沖注洗劑。adj. -al ,-ist n. 灌溉者，水利專家。
- pipeline : 導管
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This paper analyses the factors that influence efficiency of pipeline system for sprinkler irri - gation, under condition of changing existing low pressture pipeline irrigation system into sprinkler irri - gation system
就井灌區低壓管道輸水灌溉工程改造成噴灌工程后，對影響噴灌管路系統效率的因素進行了分析，給出了其管路系統效率的計算公式。 -
Abstract : this paper analyses the factors that influence efficiency of pipeline system for sprinkler irri - gation, under condition of changing existing low pressture pipeline irrigation system into sprinkler irri - gation system
文摘:就井灌區低壓管道輸水灌溉工程改造成噴灌工程后，對影響噴灌管路系統效率的因素進行了分析，給出了其管路系統效率的計算公式。 -
Characteristics of water flow of node permeation irrigation pipeline dilled
機械打孔節點滲灌管的出水特性試驗 -
The low - pressure pipeline and the field irrigation technique
低壓管道輸水與田聞優化灌溉技術 -
Fuzzy linear programming model for optimal design of main pipeline network in pump pressurized sprinkler irrigation system
機壓噴灌干管管網優化的模糊線性規劃法 -
Aimed at the current problem of pipeline layout optimization technique, the research of irrigation pipeline layout and pipe diameter optimization has been done, the gis ( geography information system ) and graph theory were first put forwarded to applyed to the design of low pressure pipeline irrigation project in the paper. with the support of gis, the minimal spanning tree theory of graph theory and 120 project theory can be applied to irrigation pipeline ' s layout optimization. at the aspect of pipe diameter optimization, simplicial method and interior - point method are been used in solve liner optimization model of pipe diameter to reach minimum project cost or a nnual working cost of low pressure pipeline irrigation
本文主要針對當前南方地區低壓管道輸水灌溉規劃設計中存在的技術難點，開發研究先進實用的樹狀低壓輸水灌溉管網計算機輔助設計系統。首次提出了將gis （地理信息系統）和圖論技術應用於低壓管道輸水灌溉規劃設計及灌溉管網優化中，在gis支持環境下，應用圖論中的最小生成樹法和120規劃進行管道的最優化布置。建立以管道輸水灌溉系統的年折算費用最小為目標函數的管徑優化線性規劃模型，並將內點法應用於線性優化模型的求解。 -
In north china, the low pressure pipeline irrigation, was mostly used and it was advanced developed in project design, the industry of pipe and pipefitting, the irrigation management, and had formed some system. the ministry of water resource had put forward the standard of low pressure pipeline irrigation project design and engage in construction for north china
在我國，北方井灌區的低壓管道輸水灌溉技術發展很快，在管灌工程規劃、管材、管件生產、管理等方面都比較成熟，並已形成一定的體系，水利部已經編制了適合北方井灌區的低壓管道輸水灌溉工程規劃設計技術規范。 -
But the low pressure pipeline technique is not widely used in north china, the main reasons are the irrigation are is more larger the north china, and the low pressure pipeline irrigation system is very large, the corresponding pipe, pipefitting is very lack, all these make the use of low pressure irrigation in south china very little, and now there is still not the standard of low pressure pipeline irrigation for south china
由於南方地區灌區面積大，管灌系統規模大，與其相配套的大口徑管材、管件規格少，配套建築物較多，灌區類型多樣，壓力變化范圍大，技術難度高，基層工程技術人員了解和掌握不充分，至今尚無適合南方地區低壓管道輸水灌溉工程設計的規范，這些是影響南方低壓管道輸水灌溉技術發展的因素。 -
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。
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