水質波動 的英文怎麼說

中文拼音 [shuǐzhíbōdòng]
水質波動 英文
fluctuating of water quality
  • 水 : 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...
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 水質 : water quality水質保護 [環保] water quality protection; 水質標準 water standard; water quality sta...
  • 波動 : 1 （不穩定） undulate; fluctuate; unsettle; surge; rise and fall 2 [物理學] wave （motion）; wave...
  1. The product quality faces up to enormous domestic and international markets challenge and the peasants face up to the slow increasing of their incomes. the shortage of water resource is more serious for the planted system, climatic change and low utilization ratio. cultivated land resource is reducing rapidly for nature factors and urbanization process, etc. the analysis results indicate the resour ces utilization mode in the hhh plain is still high investment, high - energy consumption, and grievous pollution

    農產品生產在我國佔有絕對優勢，但其受結構調整的影響也發生了波動性變化，其產品質量面臨著國內外市場巨大的挑戰，農民收入也面臨著增長緩慢的挑戰；水資源受種植制度、氣候變化及利用率低等多種因素的脅迫作用，嚴重短缺；耕地資源近年來大量減少，受自然及城市化進程等因素的影響，稀缺程度加大。
  2. 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。
  3. When the moisture content is below fibre saturation point, the movement of absorbed water is subdivided into two parts : one is diffusion transfer due to the vapor pressure gradient, the other is moisture movement caused by the pressure fluctuation due to the variation of medium

    在纖維飽和點以下時，木材內部吸著水的遷移可分為：水蒸汽壓力梯度下的擴散遷移和由於乾燥介質壓力的波動而引起的浮動壓力下的遷移兩個部分。
  4. The control system of mould level is crucial to improve the slab quality in the continuous casting process, pid controller is used in the traditional mould level control, and it has some defaults, such as : at the start - up or finishing period of casting or during the changeover of tundish, pid control has a bad effect, its overshoot is large and its transient time is long ; the erosion of the tundish stopper and the submersed nozzles lead to the accuracy of control become bad ; the abrupt falloff of block in the submersed nozzles makes the level acutely fluctuate, and pid control can not overcome the disturbances resulted from the change of casting speed

    結晶器液位控制系統是提高連鑄產品質量的關鍵環節，傳統的連鑄機液位控制方法採用常規的pid控制，存在如下不足：開始、結束澆注和換中間罐澆注時，控制效果差，超調量大，過渡時間長；塞棒頭和浸入式水口被腐蝕后引起控制精度差；浸入式水口堵塞物的突然脫落所引起的液位劇烈波動；無法克服拉速波動引起的擾動。
  5. Water wave pump combines the functions of air wave charger and water hammer pump to show fine performance, where the total energy of inflow is redistributed to heighten the presure of a part of the the flow to the desired level whereas for the rest of flow a low level of pressure is maintained, which causes moving water with high energy to reach to a higher place

    水波泵是一種巧妙地綜合氣波增壓器和水錘泵功能的全新的水泵，它通過合理利用水波動力的特殊性質，將來流中的總體能量進行重新分配，使一部分來流水提高到所需的高壓力，而其餘部分水則降到較低的壓力，即完成一個大多數能量向部分來流水轉移的過程。
  6. They are moderately well drained with a fluctuating water table and contain low amounts of organic matter, phosphorus and potassium and

    受地下水位波動影響，土壤排水程度中等，有機質、磷和鉀含量低（表2 、 3 ） 。
  7. In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source

    摘要基於李家峽水電站雙排機組振動的現場試驗研究，並且針對傳統頻譜分析方法傅立葉變換（ fft ）對于非平穩信號已力不從心這一缺陷，利用小波分析方法在時域和頻域上同時具有良好的局部化性質，通過對開停機這一典型非平穩過程信號進行小波及小波包分析，將其分解到不同頻帶內，獲取微弱信息和提取優勢頻率，並對其作振源分析，得出開停機初始時刻因水流不穩均出現強烈的振動現象，且低頻段信號能量最大，開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。
  8. The problem of water quality fluctuation of huanghe river becomes more and more serious in recent years, which exerts great influence on power plants using water from huanghe rive as their feed water

    摘要黃河水量水質隨季節的變化日益明顯，使黃河水水質波動突出，對內蒙古自治區境內以黃河水為補給水的電廠正常生產造成很大影響。
  9. The effect of variation in surge shaft section size upon the reflection of water hammer pressure and the speed of quality fluctuation attenuation

    調壓井斷面尺寸變化對水錘壓力反射及質量波動衰減速度的影響
  10. Be aimed at the characters of fluvial layered pool, such as serious intrastratal and interlayer heterogeneity, small water flooding volume and low oil displacement efficiency in its high water - cut stage, the fine research work on reservoir heterogeneity model are carried out, and the research is done on the base of geological, logging, production testing materials and production date and with a center of the research of remaining oil. the west 7th block, gudong oilfield is in case. the forming mechanisms of remaining oil and its distributing feature in this area are revealed

    本文針對我國陸相沉積層狀油藏層內及層間儲層非均質性嚴重、高含水期水驅波及體積小、驅油效率低等特點，以剩餘油研究為中心，藉助于數學地質統計及聚類分析等方法，綜合利用孤東七區西的地質、測井、生產測試資料和生產動態信息等，深入開展了儲層非均質模型的精細研究，揭示了在不同規模非均質模型上剩餘油的形成機理和分佈特徵。
  11. According to the test data and the technological and economic comparison between a process of mbr and a conventional process for reclaimed water treatment, it is concluded that the investment and operating cost of mbr is the same as the conventional process basically. the advantages of mbr are on the land occupation, maintaining, effluent quality and automatic control. the process is specially suited to hotel, restaurant and public buildings because they usually have less useable land, bigger fluctuation of sewage rate, understaffed group of management and higher quality demand of effluent

    根據取得的試驗數據，通過對膜生物反應器設計實例與傳統工藝設計相比較，在進行技術經濟分析后認為，膜生物反應器處理工藝在投資與運行成本上與傳統工藝基本持平，而在佔地、維護管理、處理水質、自動化程度等方面比傳統工藝有較大優勢，特別適合中水設施場地不足、原水波動大、管理人員少、出水水質要求高的賓館、飯店和公共建築。
  12. Considering the higher energy consumption and greater fluctuation of venting water ’ quality in activated sludge process widespread adopted, this thesis applies the optimal control strategy to the aeration process of wastewater treatment. the research supplies the preparation of the water treatment integrated equipment with the theory support, also acquires the matter of academy studies and application

    論文針對三峽庫區城鎮目前普遍採用的活性污泥工藝過程中能耗過大、出水水質波動較大的現狀，將最優控制策略應用於污水處理曝氣過程中，不僅為水處理集成化設備的研製提供了理論支持，而且對提高污水處理系統運行的穩定性、可靠性以及降低能耗都具有重要的理論價值和實際意義。
  13. The variation of coarseness and fineness of the component particles in baijiaziu profile and mafangtan profile is caused by river impetus of weihe river, including runoff volume and velocity of flow, which is closely related with climatic factors in guanzhong basin, such as precipitation, temperature and rainfall

    白家嘴與馬坊灘河流沉積物剖面粒度變化與渭河水動力變化直接相關，而渭河水動力條件又與渭河流域區域氣候變化有關。因此，粒度在剖面上的變化實質上是氣候波動的結果，利用其變化可重建河流沉積物形成以來的水文、氣候環境的演化歷史。
  14. We conclude that marine biodiversity loss is increasingly impairing the ocean ' s capacity to provide food, maintain water quality, and recover from perturbations

    我們認為海洋生物多樣性的喪失正在不斷削弱海洋具有的各種功能，如提供食物、凈化水質、平衡種群波動。
  15. 3. the bamboo carbon tube inside absorb water the fiber, it can absorb the water of the flower pot bottom to the upper level mud, to provide the plant growth need. 4. the bamboo in the flower pot carbon has the fluid matter, air of decontamination and protects fresh eliminate smelly, adsorb the moisture, improve the soil and shield the electromagnetic wave etc. effect

    4 .種植籃內填充竹炭顆粒，竹炭具有自動調濕功能，含有植物生長所需的各種礦物質，還可凈化水質空氣保鮮消臭屏蔽電磁波輻射等功效，用竹炭顆粒水培花卉其實際效果較好。
  16. It is a very important problem for steel - iron - making enterprise to remove the sulfur efficiently, improve the quality of steel and design the new products, however, the traditional iron water pre - desulfuration method based on manual control causes the instability in the process, which harms the quality of steel and increases the production cost

    在鋼鐵企業中，如何降低鋼材中的硫含量，提高鋼材質量，開發新品種是鋼鐵生產的一個重要課題。傳統的鐵水預脫硫主要採用人工控制，難以保證脫硫操作的穩定性，導致鋼產品質量波動大，脫硫成本增加。
  17. According to the theories of the energy dissipation of wave - water and sediment movement and based on the bottom sediment load formula developed by dou guoren, a formula to calculate the transport of the bottom sediment, which includes the bed load and part of suspended load, under the joint action of waves, tidal currents and wind - currents is derived

    摘要根據波動水流能量及泥沙運動原理，參考了竇國仁推導底沙輸沙量的方法，推導出波浪、潮流和風吹流共同作用下的底沙輸沙量（包括推移質和部分懸移質輸沙）計算式。
  18. Results show that the water level fluctuation with a long cycle and slow attenuation causes long regulation time of the unit

    計算分析表明，周期較長衰減較慢的尾水調壓室水位波動會影響運行機組的調節品質，主要表現為調節時間較長。
  19. Wave off into shallow waters, seabed by the friction effect change steep wave front, trough ice, water points trajectory showed reciprocating flow, but also to the shore into the flow speed usually return rate greater than offshore, the net result of sediment at the bottom to the shore handling, and was the shock waves on the shore with the water current - riviera online accumulation

    外海波浪傳入近岸淺水區，受到海底的摩擦作用，波鋒變陡、波谷變緩，水質點運動軌跡呈現往復流動，而且向岸進流速度通常大於離岸迴流速度，導致底部泥沙凈向岸搬運，並被激岸浪的上沖水流帶至海濱線上堆積。
  20. In this dissertation, after making a short review of the state - of - the - art of studies on the topics, the author present the study results, which include the following contents : ( 1 ) after simply reviewing the research results of two - dimensional wave propagation in the non - deformable porous media, a series of studies on wave propagation in the deformable porous saturated soil layers are made

    本論文就這些問題做了一些研究工作，內容如下： （ 1 ）簡要回顧了在不變形介質的前提下二維地下水的波動問題的研究成果。然後在可變形介質的前提下，直接從兩相介質動力方程出發，對含水土層中的波動問題進行了研究。
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