lower water level 中文意思是什麼
lower water level
解釋
低水位-
Through the experimental research, we think : the technological capacity of fiberglass asphalt macadam if weaker than asphalt macadam, however, if use elasticized capacity to solve blending technological problem. adjust the breed of fiber silk, extend its diameter, its paving capacity is still worth exploring, asphalt - rubber macadam structure lager have good deformed - become capacity and crazed - resistance capacity, small gap rate. good water - resistance capacity, good hot - stability and simple construction technology. therefore. pitch rubber spall is a good cover material which is suitable for the second class or lower whose asphalt pavement has split open because of fatigue. and is the good structural measure of preventing half - rigidity grass - roots unit shrink - rift reflecting. pave a thin layer of pitch rubber spall between asphalt - type pavement layer and half - rigidity basic level, although the cost of building is higher than paving togongbu in the middle, the construction technology, crazing - resistance and water - resistance are better than togongbu, not only could reduce greatly the reflex of half - rigidity grass - roots unit material, long then the use lifespan of pavement, but also it is possible to reduce suitably the thickness of asphalt mixture layer, though the cast of building in the early days becomes more, in the long - term opinion, it have fully important technological and economical significance
通過試驗研究認為：玻璃纖維瀝青碎石的技術性能不如瀝青碎石好，但路用彈性性能較好，如能解決拌和工藝問題，調整纖維絲的品種，增大其直徑，其路用性能仍值得探討，瀝青橡膠碎石結構層具有變形性能和抗裂性能良好，空隙率小，防水性能好，熱穩定性較好，施工工藝簡單的特點，因此，瀝青橡膠碎石是二級及二級以下公路因疲勞而開裂的瀝青路面的良好罩面材料，也是防止半剛性基層收縮裂縫反射的良好結構措施，在瀝青類路面面層和半剛性基層之間夾鋪瀝青橡膠碎石薄層，雖然造價比夾鋪土工布高，但其施工工藝，抗裂性能和防水性能均優于土工布，不僅可以大大減少半剛性基層材料的反射裂縫，延長路面使用壽命，而且可能適當減薄瀝青混合料面層的厚度，雖然初期造價有所增加，從長遠來看，具有十分重要的技術和經濟意義。 -
By using the yearly data of water - sand that is gotten by a couple of adjacent hydrologic station in yellow river lower reaches, this paper makes use of kinds of math methods looking for the nonlinear disturbance among all of the factors, and introduces the thinking of analysis, logic, conclusion, inference, and random to nonlinear hydrologic forecasting. it realizes the valid approximation of the water level process in erodible - bed channel
本文選擇黃河下游兩對相鄰水文站多年水沙資料，藉助多種數學方法尋找其中的非線性擾動項，將隨機數學中分析、邏輯、歸納、演繹、隨機的思考問題方式引入到非線性水文預報中，實現沖淤河道相應水位過程的有效擬合。 -
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。 -
Flow from the high water level to the lower constitutes the inflow or outflow from one basin to another.
由高水位向低水位流動的水流形成這一盆地向另一盆地的出流和入流。 -
In areas which are prone to salinization - alkalization and water - logging, measures shall be taken to control and lower the groundwater level
在容易發生鹽堿化和漬害的地區，應當採取措施，控制和降低地下水的水位。 -
( 5 ) the maximum water level risen by the enclose tideland cultivation around the reservoir is 0. 66m, the responding quality is 2000mvs, which heavily effect the environment around the reservoir. the reservoir " s water level is risen because cross section and flood canal become narrow, which caused by building dam, this makes groundwater unsmooth, drainage, even flow from a lower to a higher space and soil salinized
66m ，且為2000m 』兒的常年洪水，對庫區周邊環境的影響較大，因打壩築堤縮小過水斷面和行洪通道造成水庫水位進一步抬升，致使庫區周邊灌區地下水排水不暢，乃至倒灌，型成士地鹽堿化。 -
Using evidence weight method, the authors selected tectonic activities, hydrocarbon abundance and thickness of source rocks, level of reservoir, complexity of reservoir, degree of mineralization of formation water as the evidence layers to evaluate the favorable zones of lower palaeozoic pools at the north edge of the middle and lower yangtze area
摘要利用地質異常研究中的證據權重法，選擇構造活動、烴源巖有機質豐度、烴源巖厚度、儲層級別、儲層復雜程度、蓋層發育程度、地層水礦化度作為證據層，對中下揚子北緣下古生界油氣成藏有利區帶進行了評價。 -
Lower water level
涸水期水位 -
The comparison of stomatal parameters in leaf cuticles between two fossil angiosperms from the pliocene in west yunnan and their nearest living equivalent species indicates a little higher atmospheric co2 level at that time than the present, while carbon isotopic composition of fossil cuticles demonstrates much higher carbon isotopic discrimination and slight lower water use efficiency, showing a warmer and wetter climate than today
摘要對滇西騰沖新近紀兩種被子植物葉片及其現存對應種的氣孔參數和碳同位素組成的綜合分析表明：當時的大氣co2濃度略高於現在水平；化石種的碳同位素分餾值高於現存對應種，但水分利用效率低於現存對應種；這證明當時的氣候條件比當前更為溫暖濕潤。 -
Qualitative analysis on the effect of flood control and engineering safety -, seizing lots of water conservancy effective adjust storage. then making water level risen and reservoir backwater enlarged in the same flow level ? effect on beach and the buildings across river, soil salinization caused by flow from a lower to a higher place and unsmooth groundwater drainage destroy of travel resource caused by disorder enclose tideland for cultivation in reservoir silt up flood plain are given, then presents enclose tideland for cultivation dyke is important cause which water level rise in reservoir
本文從青銅峽水庫泥沙淤積入手，分析水庫泥沙淤積特性和庫區圍墾堤開發利用淤積灘地的現狀，對防洪安全及工程安全的影響、侵佔大量的有效調蓄庫容、造成同級流量下水庫水位抬升水庫回水上延、對沿岸及過河建築構成影響、因水位抬升致使庫區周邊灌區地下水排水不暢乃至倒灌而造成土地鹽堿化、對水庫庫區大量淤積灘地無序圍墾造成旅遊資源破壞等五方面影響的定性分析，提出庫區圍墾堤是水庫水位抬升的重要原因。 -
Dynamic control of the limit water level belongs to non - structural measures of reservoir operation. with the analysis of the cause and rule of flood in the catchments and taking advantage of hydrology and metrology information, the operable method can be obtained which not only satisfies the flood prevention but also takes full advantage of flood resources, and the upper and lower limits of the limit water level are determined with serial hydrology calculation. then, the rule of using the upper and lower limits is put forward to reach a beneficial flood operation with small risk
汛限水位動態控制方法屬於水庫風險調度的非工程措施范疇，通過分析流域洪水的成因和庫區降雨及致洪規律，結合水庫的蓄泄能力，積極慎重的利用水文氣象預報信息，研究既能滿足防洪要求，又可充分利用洪水資源的可操作性的調度方法，利用水文系列的連續演算方式推求汛限水位的變化范圍，提出使用汛限水位上下限的原則，達到風險較小、效益較大的目的。 -
It shows that the water level in the definite reach is lower than that with same discharges before dredging river, the surface slope on upper reaches dredged is enlarged and deposition load on bed is reduced or eroded
主要表現在可以引起一定范圍河段內的水位較挖河前同流量下有所降低，開挖上遊河段水面比降增大，床面淤積量有所減少或發生沖刷。 -
The width of main channel would influence the water level rising rate greatly in flood events. when the discharges in main channel increased to 8000 m ' / s from 3000 m3 / s the water rising amplitude at hydrometer stations in the lower yellow river was correlative well with the exponent ( - 0. 65 ) of main channel width and the exponent ( - 0. 33 ) of river longitudinal slope
洪水期主槽寬度對水位漲率有較大影響，主槽流量從3000m ~ 3 s增大到8000m ~ 3 s時，下游各水文站斷面水位的抬升幅度與主槽寬度的（ - 0 . 65 ）次方和河道縱比降的（ - 0 . 33 ）次方具有較好的相關關系。 -
( 4 ) the running state and hydraulic property of the hydraulic automatic tilting gate with connecting lever and rolling wheel were analyzed. the open - door curve, start - up water level and shutdown water level were ascertained, then the influence of lower reaches of a river to the running of a tilting gate was analyzed
（ 4 ）析闡述了連桿滾輪式水力自動翻板閘門的工作狀態與水力特性，推求了閘門的開門曲線、啟門水位和回關水位，並分析了下游水位對翻板閘門運行的影響。 -
For example, the condenser algorithm considered the trouble condition such as the leak of tube, fail of seal in vacuum system, the lower shaft sea - ting steam pressure, pollute of tube, the high water level of hot - well. the heater algorithm considered the trouble condition such as the leak, pollute of feed - water pipe and high water level of heater
如凝汽器演算法考慮了銅管泄漏、真空系統密封不嚴、軸封蒸汽壓力低、銅管結垢污染、熱井水位過高等故障項目，加熱器演算法考慮了給水管道泄漏、給水管道污染、結垢、加熱器水位過高等故障項目。 -
To be the wall material of gtdw, comparing with the conventional concrete diaphragm wall, plastic concrete has a much lower elastomeric modulus that approaches to that of the around soil. as a result, the deformation of the plastic concrete diaphragm wall under pressure will be similar with that of the around stratums. the stress state of the iii diaphragm wall is greatly improved and thus improvement will make it easy for the diaphragm wall to fit the stress changes by the thinner of wall or the frequent changes of the water level
塑性混凝土作為抓鬥薄墻的墻體材料，相比于普通混凝土彈性模量顯著降低，使其更接近於圍土材料的變形模量，所以塑性混凝土防滲墻在其受力后的變形能很好地于周圍地層相協調，因而能大大改善防滲墻的應力狀況，更好地適應墻體變薄及長江水位頻繁變化而帶來的應力變化。 -
Simulation analyses for steep slope indicate the ground water level rises in parallel with slope in the middle and lower portions of the slope
模擬結果說明滲透坡面的地下水位在斜面的中、下方區域內與斜面平行地上升。 -
Using flood progress model and the different discharge of feilaixia reservoir, we can calculate in time the water level and discharge of middle - lower reaches of beijiang, thus increase the accuracy of flood forecast and provide the important technical support for the further research on the optimal dispatch method of f lood control system
其中依據水文學和水力學相結合的洪水演進模型，可根據飛來峽水庫不同的下泄流量，及時計算北江中下遊河道的水面線和下泄流量，提高了洪水預報的精度，為進一步研究防洪體系優化調度方法提供極其重要的技術支撐。 -
Except for research on the unsteady flow at lower lock approach in siyang, jiangsu province by physical model, a two - dimensional numerical model is developed to explore the alternate research method in this paper. through studying the project using physical model and numerical model simultaneously, the governing equations, numerical algorithm and the computation accuracy of the numerical model are analyzed. comparison between computed results and experimental data gives that computed results is well agree with measured data under several water level cases, which indicates that the numerical model is valid and reliable
通過數學模型和物理模型的同步研究，對數學模型的控制方程、數值計算方法以及數值模擬的精度與物理模型試驗進行了比較分析，同實測資料驗證的結果表明：該數學模型與物理模型一樣在不同的水位組合，不同的運行工況條件下都能正確地模擬下游引航道非恆定流的實際水力情況，模型計算結果與實測資料十分吻合，說明建立的數學模型是合理的，結果是可靠的，可以利用該數學模型進行船閘下游引航道非恆定流特性的研究。 -
Along with the developments of skyscraper, subwsty, long tunnel, etc. the problem that lower the underground water level is increasingly outstanding
隨著高層建築、地鐵、長大隧道等工程的發展，降低地下水位的問題日益突出。
分享友人