variable water level 中文意思是什麼
variable water level
解釋
動水位-
At first, this paper analyzes the factors of water - sand influencing water level of yellow river and the feasibility just using the factors of water - sand to study water level, and collects the corresponding data ; secondly, because there are strong nonlinear relation in the corresponding data, by meticulous theory analysis, this paper integrates basic nonlinear analysis method, theory of random analysis, method of least squares and so on. it puts forward a method which can get the high accuracy simulation of the data, perfects the multi - factor analysis of variable ( over three factors ) of the statistic ; thirdly, it applies the method to the approximation of corresponding water level process which belong to the capacity of sand of middle - high and middle - low, and get the high - accuracy simulation about the typical nonlinear relation ; at last, this paper definitudes the main influence mode that the capacity of sand. it mainly unite with other factors to work on the water level in the yellow river lower reaches ; mor eover, this paper analyzes the difficult point and the direction of improvement to realize the accuracy forecasting of the flood level of erodible - bed channel
首先，系統分析了影響黃河水位的水沙因素，及僅用水沙因素有效研究水位的可行性，並按變量對應思想採集它們的相應數據；其次，由於相應水位過程數據中含極強的非線性關系，本論文經細致的理論分析，將基本的非線性分析方法、統計建模方法、隨機分析理論、最小均方誤差原則等等數學理論及方法有機揉合，提出了能有效實現這類數據高精度擬合的分層篩選法，並改進了統計學中多因子（三個以上）方差分析法；再次，將這一方法用於黃河中高及中低含沙類洪水相應水位過程的擬合，實現了這一典型非線性關系的高精度擬合，各年汛期上下游相應洪水位過程的擬合誤差都較小；最後，明確黃河下游含沙量對水位的主要影響方式，即含沙量主要是與其它因素聯合對水位作用；另外分析了要實現變動河床洪水位過程準確預報的困難所在及改進方向。 -
This paper evaluates the underground water resources and its safe levels of miming, and then studies the availability of molepipe drainage, a kind of practical underground water regulation technique. starting with the elevation of underground water resources and a safe level of mining through variable system theory, this paper analyzes the conditions of underground water resources based on the well - studied determination method of determining the two hydrographical coefficients : rainfall infiltration replenishment rate and irrigation replenishment rate. then considering irrigation, rainfall, drainage and other related factors, a mathematical model is set up for the calculation of underground water storage, exploitation on water regulation
論文從灌區的地下水資源及其可開采量評價分析方面入手，在對兩個主要的水文地質參數即降雨入滲補給系數、灌溉入滲補給系數確定方法研究的基礎上，對灌區的地下水資源狀況進行分析，依據灌區的灌溉、降雨、排水條件及各種現狀因素，建立了地下水資源量計算的數學模型，西安理工大學工程碩士專業學位論文計算得到青銅峽灌區地下水的最大補給量和可開采量;另外對在開發利用地下水資源過程中的地下水位的調控進行了初步的探討，在銀北灌區開展對暗管排水調控地下水位的試驗研究。 -
The model is used to calculate water level and dis - charge of river network with tidal level as independent variable
該模型根據潮水位的變化，模擬河網的水位和流量變化過程。 -
According to the instance of the arch dam built, take the discount quotiety, the verification flood water level, the frictional quotiety and, the agglomerate force and as stochastic variable quotiety, calculate the reliability index of the abutment with the calculational programme after the average value and variable quotiety is known
對于所取的拱壩實例，以揚壓力折減系數，校核洪水位，摩擦系數、 ，凝聚力、為隨機變量，在已知其均值並設定變異系數的前提下，利用電算程序計算其壩肩巖體的可靠指標。 -
Through the analysis on the relationship and variable tendency between the present population situation, main index of economic development and the amount of water consumption, the quota of water consumption, meanwhile, synthetically considering about the variation of influential factor such as water resources condition in future, economic and social development, science and technical progress, the efficiency of water consumption and the level of water conservation, etc, the relationship between the above - mentioned synthetical influential factors and the index of water demand amount is established and the variation of growth rate of water demand in future and the variation breadth of other indices such as water consumption per capita and water consumption unit value of output are confirmed
摘要通過對現狀人口、主要經濟發展指標與用水量、用水定額的關系及其變化趨勢的分析，在綜合考慮未來水資源條件、社會經濟發展、科技進步以及用水效率、節水水平等影響因素變動條件下，建立綜合影響因素與需水量指標的關系，確定未來需水量增長率的變化及人均用水量、單位產值用水量等指標的變動幅度。 -
The simulation results prove that the control system has perfect decouple and self - learning control performance for multi - variable strong - coupled time - varying deaerator water level control system
模擬結果表明，該控制系統對多變量強耦合的除氧器水位控制對象具有良好的解耦性能和自學習控制特性。 -
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。 -
At the same time, the implemental approaches of the genetic algorithm for water supply systems including both fixed and variable speed pumps were introduced. the direct optimal operation model and two - stage optimal operation model of water supply systems with one or more tanks were proposed, according to the hydraulic characteristic of storage tanks. appropriate fitness function of genetic algorithm was designed to solve upper level optimization and lower level optimization in two - stage optimal model
在分析了蓄水池數學模型的基礎上，建立了含有蓄水池的供水系統優化調度二級尋優模型和直接優化模型，並設計了遺傳演算法適應度函數分別求解二級尋優模型中的一級、二級尋優，針對二級尋優出現無解的情況，提出了放鬆約束處理和對一級尋優得到的最優水池水位進行修正的方法。
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