需水 的英文怎麼說

中文拼音 [shuǐ]
需水 英文
water need
  • : Ⅰ動詞(需要) need; want; require Ⅱ名詞1. (需用的東西) necessaries; needs 2. (姓氏) a surname
  • : 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...
  1. The result shows, for this composite cement system, retarding action of dihydrate gypsum is more obvious than that of anhydrite, meanwhile, anhydrite tends to cause setting time short and water needed increased

    結果表明:二石膏對該種復合體系泥的緩凝作用比硬石膏明顯,硬石膏易引起復合體系泥急凝和需水量增大。
  2. Computation of ecological and environmental water demand in river basion

    流域生態環境需水計算
  3. The dissertion, after introducing physical geography situation and societal economic sitiuation of chongqing, has also analysed the basic feature of water resources in chongqing, at present the water resources utilization in chongqing is still in traditional phase. there are so many faults and shortcomings in water resources management system. the construction of water resources institutions and regulations is fallen behind. the supply of water resoures has not sufficiently satisfied the demand to water resources. the condition of water quality has not radically improved. soil losses is still serious. the incidence of flood and drought is very high. in accordance with present condition of water resources utilization in chongqing, the dissertion argues that it should strengthen people ' s understanding to water resources sustainable utilization for chongqing ; reform the present water rexources management system and have a try on water affairs management system in chongqing ; make effort to construction of water resources " institutions and regulations ; realize demand management, constuct save - water model society ; according to actual condition, strength water utilization constrution, then realize the balance between water resources supply and demand ; according to the idea of " control resources, conduct flow ", control water pollution, realize sanitary generation ; control soil losses and protect water enviroment ; construc t the system of flood control and diaster prevent

    在對重慶市的自然地理情況和社會經濟情況作了介紹之後,還分析了重慶市資源的基本特徵,目前重慶市的資源利用還處在傳統的開發利用階段,資源管理體制還存在許多弊端,的法規制度建設也相對落後,的供給還不能完全滿足求,質狀況沒有得到根本性的改善,土流失還很嚴重,旱災害發生的頻率比較高。針對重慶市資源利用的現狀,本文提出:應加強對資源持續利用的認識;改革目前重慶市的管理體制,嘗試務局管理體制,相應加強的法規和制度建設,實現需水管理,建立節型社會;根據實際情況,加強利建設,實現的供平衡;依據「控源導流」的思想控制污染,實現清潔生產;治理土流失,保護環境;建設防洪減災體系。
  4. The dissertatio n constructs the index system, introduces the coefficients of development, coordination, fairness, and the coefficient of sd, which is composed by the former three and can reflects the sd overall strength of watershed, brings forward the quantative criteria of in order that the research of wrcc is based on the good watershed ecology and environment, the dissertation, according to the ecological appropriate theory, builds the logarithm normal distribution model about the relation between the growth of natural vegetation and the depth of groundwater ; based on this relation model, proposes a quantitative method of ecological water requirement ( ewr ) of natural vegetation in arid area, which utilizes the results of rs technique and the spot testing data of vegetative physiology demand

    針對流域特點建立了基於資源的流域可持續發展評價指標體系,引入發展系數、協調系數、公平系數,以及由其構成的衡量資源支撐社會可持續發展綜合平與能力的可持續發展系數,提出了可持續發展的定量判別方法。為保證在良好生態的前提下進行資源承載能力研究,論文根據生態適宜性理論,建立了乾旱區典型天然植物生長與主要環境因子的偏態單峰對數正態分佈模型。基於此關系模型,利用遙感技術成果以及植物生理需水的現場實驗數據,提出了乾旱區天然植被生態需水量計算方法。
  5. Knowledge of historic and present water demands is needed to provide a factual base for predicting future water demand.

    應了解過去和當前的需水量,以便為估算未來的需水量提供實施依據。
  6. In recent years, the water - saving and control irrigation technique of rice has diverted from plot experimental and demonstration to lare scale. and has got remarkable economic and social benefits. amed at the characteristics of this irrigation area, optimal selection for water - saving techniques of rice, deciding the amout of leaching water and irrigation modles, investigating the adaptability of the water - saving and control irrigation technique in saline land. studying the increase in production mechanism of the technique are important to extend the technique, to better and develop saline land as well as slick spots. according to the results of field experiments, optimization study was conducted on the water - saving irrigation technique of rice in saline land, the effects of different water - saving irrigation techniques on the physiological indexes and yield of rice were systematically analyzed. by using mutiplepurpose fuzzy optimization method, better. water - saving irrigation technique was selector out, that is. the control irrigation technique in rice. the mechanism of it was analyzed from the aspect of the physiological and ecological saving water of rice to provide the implemental process and technical point ; throgh the quantitive analysis and comparision on control irrigation and control class ( flood irrigation ), high production and quality mechanism of the technique was analyzed in terms of physiology indexes of rice, the variation of soil moisture, the pest resistance and the lodge resistance, the change of soil temperature in paddy fields. the yield constitutive factors, the quality of rice and so on. in saline land. control irrigation and intermittent leaching modles were adopted to validate the adaptability of the technique in irrigation of rice in saline land, to analyze rice ' s physiological - ecological indexes and the change of soil salt content under the conditions of control irrigation leaching of rice and and to provide control irrigation and combined modle of intermittent leaching to adapt to different conditions

    本文從試驗及試驗資料入手,取得以下主要成果和結論:對鹽堿地稻節灌溉技術進行優化研究,系統地分析了不同節灌溉技術對稻生理指標及產量的影響,採用了多目標模糊優化的方法,對灌技術進行綜合評判,優選了節灌溉技術,論證該地區宜採用稻控制灌溉技術;闡述控灌技術通過調節和控制稻的需水規律,降低稻高產情況下的無效量消耗,從稻生理、生態節兩方面分析了控灌技術節機理,針對性地總結出稻各生育期實施節控灌技術的步驟及技術要點;通過控灌與淹灌的定量對照比較,從根系、莖蘗、冠層葉片及綠葉動態到株高,土壤分變化,抗病蟲害、抗倒伏能力,稻田土溫變化,產量構成因素及稻米品質等諸多方面進行動態比較,分析控灌技術高產優質機理;在鹽堿稻地採用控制灌溉+間歇淋洗模式,跟蹤測試田間鹽變化狀況,驗證控制灌溉技術在鹽堿地區稻灌溉中應用的適應性,通過分析稻控制灌溉淋洗條件下稻生理生態指標,提出優化控制灌溉+間歇淋洗組合模式,為進一步在高礦化度地區試驗稻控灌技術奠定基礎。
  7. Experimental study on litchi water requirement

    荔枝需水量試驗研究
  8. Analysis of irrigation demands and evapotranspiration in the piedmont of taihang mountain

    太行山山前平原區蒸散量和作物灌溉需水量的分析
  9. Calculation method on ecological pondage and ecological water requirement of marsh

    沼澤濕地生態儲量及生態需水量計算方法探討
  10. According to the least twin multiplication to calculating the sensitivity index in several water production functions. thus, the writer obtains the fitted the value of the sensitivity index and the varied rule. at the same time, the writer puts forward a new method named rag a ( real coding based accelerating genetic algorithm ) and combines raga with dpsa to calculating the best irrigation system under the non - sufficient irrigation of well irrigation rice in sanjiang plain

    根據《隨機文學》理論中的時間序列分析法,建立了適合三江平原井灌需水量預報的非平穩時序隨機模型;通過分析降雨隨機特性,選定季節性時序隨機模型,建立了適合三江平原井灌稻降雨預報的月平均降雨模型;根據最小二乘法,計算出幾種常用分生產函數中的敏感指數及敏感系數,進而得到三江平原適宜採用的分生產函數漠型及模型中敏感指數的變化規律;本文提出遺傳動態規劃法( raga ? dp ) ,即採用改進的基於實數編碼的加速遺傳演算法( realcodingbasedacceleratinggeneticalgorithm ,簡稱raga )與動態規劃法( dpsa )相結合,推求非充分灌溉條件下三江平原井灌稻的最優灌溉制度。
  11. Study on eco - environmental water use and demand of river basin

    流域生態用需水研究
  12. Exploration of change law of soy ' s life - require water

    大豆生態需水的變化規律研究
  13. Eco - environmental water requirement in the zhalong wetland

    扎龍濕地生態系統需水
  14. A study comparing water use efficiency and root shoot ratio of alfalfa and astragalus adsurgens at seedling stage

    苜蓿和沙打旺苗期需水及其根冠比
  15. Taking xinzhou city as the case, the paper analyzes the city ' s actual situation of water supply, available water sources and their amount, distribution and development. it also calculates the mid and long term needed water amount and insufficient water amount in the city. taking the natural, commercial and life material properties and environmental function of water sources into full consideration, taking the satisfaction of the needed amount of the city and the balance and the largest capacity of every water source as the prerequisite, the paper aims at the mid and long term water supply sources ( north water sources region, douluo water sources region, shuiquanwan water sources region ) and the lest spending on the investment and operation of the self - equipped wells ; through the determination of decision variables, a model of economic management for the city ' s water supply is established, witch carries out the mid and long te rm optimal operation of water supply for the city

    本文以忻州市為例,分析了忻州市供現狀,可供源、資源量、分佈及開發利用情況,預測了中長期需水量和缺量,充分考慮資源的自然屬性、生活資料屬性、商品屬性和環境因素功能,通過決策變量設置,在保證城市需水量、資源平衡和各供源最大供能力的前提下,以開采忻州市中長期供源(北源地、豆羅源地、泉灣源地)和自備井開採的投資和運行費用最低為目標,建立了城市供源優化調度經濟管理模型,運用線性規劃方法進行了城市中長期供源優化調配。
  16. At last, the water resources security and countermeasure were given. every parts of the eco - environmental water demand in hejin city were analyzed and calculated in this paper

    另外,本文對河津市的生態環境需水各項進行了詳細的分析和預測,逐一計算了不同年份的生態環境需水量。
  17. First each of the eight factors, i. e., per capita water resource available, per capita water requirement quantity, environmental water use rate, utilization rate of water resource, industrial water requirement quantity per 10, 000 industrial product value, water requirement module, regional irrigation rate was analyzed. then the water resource capacity in hejin city was evaluated by applying the fuzzy comprehensive estimation

    選取了人均資源可利用量,人均供量,生態需水率,資源利用率,萬元工業產值需水量,需水模數,生活需水定額,耕地灌溉率等8個評價因素,利用模糊綜合評判模型對其資源承載能力進行了評價研究,並提出了河津市資源安全對策。
  18. The water resource and its current using condition in hejin city of shanxi province were analyzed in this paper. based on the development rate of the loess plateau, the water demand & water supply from the year 2005 to 2050 was forecasted, and the water demand & water supply in different cases was analyzed

    本文把常規趨勢預測和模糊綜合評判相結合,以黃土高原地區社會經濟發展趨勢為背景,結合河津市實際情況適當調整發展參數,預測了該市2005年2050年的需水量、供量,分析了不同方案下資源的供平衡。
  19. At present, the studies about the controlled alternate furrow irrigation are focused on how it affects the water physiological indexes, water consumption and yields of crops. but, some problems suc h as the soil infiltrative parameters, irrigating water advancing, water redistribution in soil, calculation of crop water requirement and water consumption, and the upper and lower limit indexes of soil moisture, guiding a field irrigation after the controlled alternative furrow irrigation is implemented in field, have not been researched systematically and deeply. if these problems could not been solved commendably, the popularization of controlled alternate furrow irrigation will be affected

    然而,目前有關交替隔溝灌溉的研究還主要集中於這種灌方式對作物分生理指標、耗量和產量的影響方面,而對大田採用這種灌式后的土壤入滲參數變化情況、作物需水量與耗量計算、以及指導大田灌溉的分下限控制指標等與大田生產實際密切相關的幾個問題基本上還沒有進行系統的深入研究,而這些問題如不能得到很好地解決,勢必會對這種灌方式的推廣應用產生嚴重的影響。
  20. Space - time alterable characteristic between economic growth and land, water, energy resources is studied ; land carrying capacity, water carrying capacity, the supply and demand of energy is forecasted, in order to provide reference and gist for correlative bureau to constitute economic and environmental plan

    從時間和空間角度分別論述了山東經濟增長與土地資源、資源和能源資源的變動特點和規律,並在此基礎上預測了土地承載力、資源承載力和能源供需水平,以便為相關部門制定規劃提供一定的參考和依據。
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