range of water level 中文意思是什麼
range of water level
解釋
水位變幅-
Firstly, the status of our nation ' s water resources, flood and arid hazards is overviewed to illustrate the necessity for study on dynamic control of flood season limited water level. disadvantages in traditional limitsd water level design, static control of limited water level design, static control of limited water level and fuzzy limited water level curve are pointed out, and mending methods for these are introduced. dynamic control and its key problems are analyzed hi next section. the allowable range of limited water level is determined, so as the allowable extreme risk index. the definition of extreme risk is re - illustrated, risk analysis methods in reservoir operation is discussed either. according to the definition of extreme risk rate, the allowable extreme risk rate of reservoir is systematically demonstrated with variant extreme risk indexes and flood season limited water level
本文首先闡述了我國水資源狀況和水旱災害、說明水庫汛期限制水位動態控制研究的必要性；介紹了傳統汛限水位設計、汛限水位靜態控制、模糊汛限水位過程線存在的問題及其初步改進方法；分析汛期限制水位動態控制的方法及關鍵問題；進一步闡述了水庫極限風險率的定義；根據極限風險率定義，詳細敘述了不同極限風險指標時、不同汛期限制水位下起調，水庫所能承受的極限風險率計算方法。然後，基於極限風險率計算方法，以白石水庫為背景，研究「考慮壩體自身安全、考慮壩體安全與下游防護對象控制下泄流量的汛限水位動態控制的極限風險率」 。 -
Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows : ( 1 ) reviewed entirely the origin and evolvement of the concept " sustainable development ", stated and commented the study status in queue on " sustainable development " around national and international range, thorough discussed the science connotation about the concept " sustainable development " ; ( 2 ) looked back and commented across - the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings ; ( 3 ) expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory ; ( 4 ) thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the matlab software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the b - j method and morte - carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources ; ( 5 ) synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming mathematical statistics random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality ; ( 6 ) analyzed the inside condition and outside condition to assure the sustainable and optimum exploi tation of groundwater resources, the inside conditions are the follows : correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows : the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water - saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology ; ( 7 ) scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy ; lint out the more directions on groundwater resources
基於以上考慮，論文主要從以下幾方面對地下水資源可持續開發問題進行了比較深入的探討：全面回顧了「可持續發展」概念的由來與演變，對國內外「可持續發展」的研究現狀進行了述評，並對「可持續發展」概念的科學內涵進行了深入探討；對涉及地下水資源的一些最基本的概念和命題進行了全面的回顧和評述，對目前仍然存在的一些錯誤觀點和混亂認識提出了自己的見解；全面闡述了地下水資源變值系統理論的內容和意義，並與傳統的地下水資源計算評價方法進行了對比分析，結合實例具體說明了方法的應用；深入分析了地下水資源預測預報工作的極端重要性和復雜性，對傳統的地下水資源動態預測方法進行了全面的評述，指出了各類預測預報方法的特點及適用條件，對最近二十多年剛發展起來的小波分析技術的主要思想和方法及其應用范圍，以及號稱第五代計算機語言的matlab軟體和附帶的小波分析工具箱進行了介紹，並應用於地下水動態過程線的分析，採用時間序列中的b ? j法，蒙特卡羅方法，與地下水資源變值系統理論相結合，探討了地下水動態資料分析和地下水資源預測預報的新思路；綜合分析了現今各類地下水管理模型的特點及缺陷，將數學規劃、數理統計、隨機過程等與地下水變值系統理論相結合進行地表水地下水或多水源的聯合優化調度，使模型更準確、更實用；對保證地下水資源可持續開發的內部條件和外部條件進行了分析，內部河海人學博卜學位論文前言、摘要、目錄條件主要是正確的資源觀，科學的資源計算與評價方法，可靠的資源預測預報技術，可操作的資源管理措施，外部條件主要是高層發展思路、管理體制的變革、配套的政策法規、經濟杠桿的調節、人文素質的提高、節水意識的增強及具體節水措施、人口增長的控制、水體污染的防治、生態的恢復和重建等;從宇宙科學、地球系統科學及哲學的高度審視地下水資源的可持續開發;指出了地下水資源可持續開發的進一步研究方向。 -
The problem of modeling and control is a attention focus of people. the boiler water lever is importance index of industry boiler safety and satabilization. it is importance meanimg to ensure water level in definite range for increasing quality of steam and reducing wastage of equipment and insuring safety of whole hert - power - net at present, the mostly method is adopt the routine pid control
鍋爐的建模與控制問題一直是人們關注的焦點，而汽包水位是工業鍋爐安全、穩定運行的重要指標，保證水位控制在給定范圍內，對于提高蒸汽品質、減少設備損耗和運行損耗、確保整個網路安全運行具有重要意義。 -
In ported trials, wu gave the minimum tr of all plants, and its diurnal maximum tr persisted stability the most within the range of soil moisture 20. 4 % - 6. 4 %. ; nx lowered its tr and shrank its high - low lines after had experienced irregular wet - drought hardening period during culturing ; kerqin performed a plasticity as compared to field ; c. lanata also stood the most stability but on the basis of middle - high maximum tr level ; tr by caragana korshinski was high when soil water was abundant, but was lowest for lack of water ( 6. 4 % )
盆栽試驗表明，華北駝絨藜蒸騰最弱，且在土壤含水量20 . 4 6 . 4的范圍內最高蒸騰速率穩定性最強；經脅迫鍛煉寧夏駝絨藜蒸騰降低，變幅減小；科爾沁駝絨藜與大田相比蒸騰可塑性較強；土壤水分變化中，北美駝絨藜蒸騰在中高水平上維持穩定的能力最強；水分良好時檸條蒸騰很強，水分脅迫中蒸騰極大降低。 -
Electromotor joins with high efficiency selected water pump, scm ( single chip micyoco ) control system commands water pump according to cooling water temperature which substitutes traditional strap - driving mechanism pump and forms tael - level intellectualized control cooling system combining with electromotion control of cooling fan. consequently it realizes that water pump and fan autoregulate with engine working status and assures t hat cooling water temperature keeps in the best range all the time and advances the reliability of engine working and realizes exact control of cooling water temperature in deed
選用高效率水泵與電機聯接，改由單片機控制系統根據冷卻水溫控制水泵的工作，代替傳統的皮帶帶動的機械水泵，結合冷卻風扇的電動控制形成兩級智能化控制的冷卻系統，從而，實現了水泵和風扇轉速隨發動機工況變化的自動調節，真正實現了冷卻水溫的精確控制，保證了冷卻水溫始終保持在最佳范圍內，大量減少傳熱損失降低油耗，並提高了發動機工作的可靠性。 -
Based on the analyses of the flow and sediment characteristics and evolution trend of the river bed of the fuling reach in the yangtze river before and after the impoundment of the three gorges reservoir, the water level, velocity variation and influenced range in the fuling reach before and fifty years after the operation of the three gorges reservoir with the construction of the fuling dock and four discharge combinations are calculated by using a two - dimensional flow mathematic model
摘要在分析長江涪陵段的水沙特性和三峽水庫蓄水前後該河段河床演變趨勢的基礎上，運用二維水流數學模型，分析了4種流量組合情況下在三峽水庫運用前和運用50年，涪陵港區碼頭修建前後的水位、流速變化及其影響范圍。 -
For the medium and small sized hydropower stations equipped with through - flow turbines under the condition of higher fluctuation range of the tail - water levels, the internal space of the auxiliary powerhouse under the maximum tail - water level is almost closed with poor ventilating and lighting condition
摘要高變幅尾水位的中小型貫流式水電站，副廠房最高尾水位以下內部空間近乎封閉，廠房自然通風與採光條件較差。 -
It possesses the characters of high head, high velocity, long operation time and large variation range of water level
它具有水頭高、流速大、運行時間長、水位變幅大等特點。 -
Based on the water supply risk and its variable process of dalian city, this paper proposes a cost - benefit analysis method for flood resources to inquire into the control range of the reservoir ' s flood limit water level, according to the use course of the flood resources and flood range analysis
摘要以大連市碧流河水庫為例，根據大連市供用水系統的風險及其變化過程，分析超蓄洪水資源的利用情況及其效益，並在對抬高水庫汛限水位造成的淹沒損失分析的基礎上，利用邊際成本分析方法確定控制的范圍。 -
Note 4 : installation dimension used in the cable and pole transmitter, if measuring range of well water - level is 10 m, installation dimension is 11 m, then extra 1 m use to installation regulating, actual measurement is 10 m and does not notice. cable type approves height regulation is 1 m pole type users should be detail noted the installation dimension
注4 ：安裝尺寸在纜式及桿式變送器使用，如測量水井水位量程10m安裝尺寸11m ，則多出1m作安裝調節用，實際測量為10m ，不註明，纜式默認1m高度調節，桿式用戶應詳細註明安裝尺寸。 -
Note 3 : installation dimension used in the cable and pole transmitter, for example measuring range in water - level of well is 10 m, installation dimension is 11 m, then extra 1 m acts as installation regulating use. actual measurement is 10 m and does not notice. cable type approves height regulation is 1 m, pole users should be detail noted the installation dimension
注4 ：安裝尺寸在纜式及桿式變送器使用，如測量水井水位量程10m安裝尺寸11m ，則多出1m作安裝調節用，實際測量為10m ，不註明，纜式默認1m高度調節，桿式用戶應詳細註明安裝尺寸。 -
In the light of the signals of roll angle and water level, we can control the air valve, and use this control method to simulate the controlled passively anti - rolling tank. simulation results indicate that this control strategy is feasible. the controlled passively anti - rolling tank can work in the wide frequency range
控制策略是根據橫搖角度和邊艙液位信號的變化來對氣閥進行控制，採用這種控制策略對可控被動式減搖水艙進行了模擬研究，結果表明所控制策略是行之有效的，可控被動式減搖水艙能在更寬的頻率范圍內達到較好的減搖效果。 -
2. the particular water level - controlling circuits and sensor circuits in the patrolling point can monitor the change of water level and the vibration of apparatus in order to inform managers in time. at the same time if the change is n ' t within normal range, the alarming circuit can send the message. 3
2 、在巡檢點中設置了獨特的液位監控電路和傳感器電路以便及時監測水位變化和水輪機組振動情況，將變化數據快速通知管理者，若變化在規定范圍之外，巡檢儀中的報警電路將及時報警。 -
In this paper, a set of medium - and - long - range hydrologic forecast models were established for predicting water regime in shanghai, including three hydrological series, annual rainfall and rainfall during flood season for one representative station and annual maximum water tide level at huang - pu park. the prediction models includes two parts. one is quantitative ones which are mainly studied in the paper, including ar ( p ), gm ( l, l ), modified gm ( 1, 1 ) and threshold ar modeling ; the other is markov chain qualitative modeling
研究分兩個方面，一是定量預測，是本論文的主要研究內容，共建立了四個預測模型，分別是ar （ p ）模型、 gm （ 1 ， 1 ）模型、改進gm （ 1 ， 1 ）模型及tar模型；其二是建立了馬爾柯夫定性預測模型，給出分級預測結果。 -
Some industries such as petrochemistry imminently need a new kind of liquid - level measuring instrument, which can detect whole range of many lays, can indicate the oil - water interface and the thickness of mixed lay
在石油化工等行業中迫切需要一種能實現多層面全程檢測，能指示出油水不同界面和混合層厚度的新型液位測量儀表。
分享友人