water quality change 中文意思是什麼
water quality change
解釋
水質變化-
There the water - flower was the lily ; the crowfoot here. either the change in the quality of the air from heavy to light, or the sense of being amid new scenes where there were no invidious eyes upon her, sent up her spirits wonderfully
也許是空氣的性質從沉悶到輕松的變化，也許是她覺得已經到了沒有人用惡意的眼光看待她的新地方，於是她的精神奇妙地振作起來。 -
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：對鹽堿地水稻節水灌溉技術進行優化研究，系統地分析了不同節水灌溉技術對水稻生理指標及產量的影響，採用了多目標模糊優化的方法，對灌水技術進行綜合評判，優選了節水灌溉技術，論證該地區宜採用水稻控制灌溉技術；闡述控灌技術通過調節和控制水稻的需水規律，降低水稻高產情況下的無效水量消耗，從水稻生理、生態節水兩方面分析了控灌技術節水機理，針對性地總結出水稻各生育期實施節水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，土壤水分變化，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，跟蹤測試田間水鹽變化狀況，驗證控制灌溉技術在鹽堿地區水稻灌溉中應用的適應性，通過分析水稻控制灌溉淋洗條件下水稻生理生態指標，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水稻控灌技術奠定基礎。 -
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。 -
To lily flower of high quality characteristic production in qingyang carry through plastic pellicle mantle and maize straw pole mantle in live through the winter, analysis soil water resume, ground temperature change character and different mantle material water, heat resource to the effect of upgrowth period, growth measure and output inscape of lily flower
摘要通過對慶陽優質特色產品黃花菜越冬期進行地膜覆蓋和玉米秸稈覆蓋，分析越冬期土壤水分損耗、早春地溫變化特徵，以及不同覆蓋材料水、熱資源對黃花菜發育期、生長量、產量構成要素的影響。 -
The two sides reaffirm their wish to strengthen exchanges on environmental issues including climate change, sustainable management of natural resources, and measures to address forest law enforcement ( including illegal logging ), conservation of water resources, improving air quality and pollution control, and to learn from each other on environment - related legislation, supervision and personnel training
雙方重申願意就包括氣候變化、自然資源可持續管理、森林執法（制止非法採伐） 、水資源保護、空氣質量改善和污染控制等環境問題所採取的措施加強交流，在環境立法、監督和人員培訓方面互相學習。 -
Through comprehensive analysis of monitoring results of water quality of huang river, da hei river system and hui river system over ten years, the change tendency is exposed, and the problems in each river pollution section which are urgent to be resolved are put forward
摘要對黃河（過境） 、大黑河水系及渾河水系十年水質檢測結果進行綜合分析，揭示其變化趨勢，並針對各河流污染斷面提出急需解決的問題。 -
Groundwater level prediction is also a very important field in groundwater environment prediction. land subsidence, encroachment of sea water and deterioration of water quality and so on by artificial development have relation to sustained drop of groundwater level. after groundwater level change mechanism was analyzed, the establishment method of groundwater level prediction regression analysis model was explored. and the groundwater level development trend of some planning region with the model was predicted according to its change characters of groundwater level, wath ' s more, the prediction results was analyzed
地下水位的預測也是地下水環境預測的重要內容，地下水在開采過程中所產生的地面沉陷、海水入侵、水質惡化等現象均與地下水位持續下降有關，本文在對地下水位變化機理分析的基礎上，探討了地下水水位預測回歸分析模型的建立方法，並針對某規劃區地下水位變化的特點，應用該模型對該規劃區地下水位發展趨勢進行了預測，並對預測結果進行了分析。 -
The super entropy produce criterion is a good tool to judge the system ' s abrupt change from a lower grade to a higher one. in this paper the entropy of the urban resource - environment system was defined, and in an example of its application the super entropy produce criterion of the urban resource - environment system reflected the real developmental process of the whole system. furthermore, in this paper, a new model for the grid size optimization of the finite element method ( applied to the water quality modeling of the topographically complicated river ) was brought forward based on the maximum information entropy theory in condition that the length of gird was given
超熵產生判據為我們提供了判斷系統從低級有序向高級有序突變過程的工具，本文提出了城市資源與環境系統熵的定義，在實例中的應用證明城市資源與環境系統的超熵產生判據較好地反映了整個系統的演化情況；另外，本文針對在城市復雜河道情況下，利用有限單元法求解河流水質模型時網格單元大小難確定的問題，引入網格信息熵的概念，提出了有限單元法求解河流水質模型的網格優化方法。 -
Change of nutrients and present evaluation of water quality in the cage fish culture region of jiantiao at sanmen bay
三門灣健跳網箱養魚區營養鹽的變化及水質現狀評價 -
C : is used for purifying water quality to make the tourmaline powder tourmaline ceramsite, is used for purifying in the ore container, can remove the chlorine of the running water, thus change the acidity of water
電氣石多與氣成作用有關，一般產于花崗偉晶巖中，也可產于交代作用形成的變質巖中。具壓電性的晶體可用於無線電工業，色澤鮮艷者可作寶石，在中國稱為碧璽。 -
In summer, when hydraulic load ranges from 7ml / l - d to 60ml / l - d, the change of the water quality of water discharge is very small, and the removal ratio is over 70 %
夏季cod進水濃度為1500mg l左右，水力負荷在7 60ml l ? d范圍內逐漸增加時，出水水質變化不大，去除率基本穩定在70以上。 -
Water quality change trend analyse of yining city ' s drinking water sources land
伊寧市飲用水源地水質變化動態趨勢分析 -
Abstract : the dongjiang river, as one of main streams of the pearl river system, is the important water system in eastern guangdong province. this paper analyzes the water quality of dongguan reach in the dongjiang river in mid and late 1990 ( 1994 1999 ) and, on the basis of this, studies the rule of seasonal change of the water quality and discusses the developing tendency of the water quailty
文摘:東江是珠江水系的主要幹流之一，是廣東東部至關重要的水系，文中詳細分析了東江東莞段90年代中後期的水質狀況，在此基礎上研究和探討了東江東莞段水質的季節變化規律及其水質變化趨勢。 -
And the more complex the water quality is and the higher the tds is toward the center of basin ; the change of water quality in the malian river indicate that groundwater of the east and west side recharges the river
說明鄂爾多斯盆地南區的東部地區和西南部地區為地下水補給區，而中心地帶為地下水排泄區，最終經馬蓮河排出區外。 -
Based on the analysis to the ecosystem ' s structure and features, the rule of baiyangdian water eco - system change is put forward according to the controlling variable of water quality and water quantity by catastrophe theory
摘要通過在分析白洋淀水生態系統的構成與特點的基礎上，應用突變理論對白洋淀水生態系統在水量與水質兩個控制變量作用下的變化進行了研究，闡述了白洋淀水生態系統狀態變化的規律。 -
Based on the change of the traditional opinion about controlling the water environment of river, the water quality contamination status of the secondary streams in the three gorges reservoir is analyzed
摘要本文基於傳統工程治理河流理念的轉變，對三峽庫區次級河流整治中存在的問題進行了分析。 -
Through the continuous correctly monitoring of 27 index of the huangqian reservoir, the ground drinking water source area of taian city, we appraised and studied the space - time change of water quality of the reservoir, disclosed the main pollutant of it, produced the current reasons, and put forward the corresponding settlements in order to protect the drinking water source pointedly, improve water quality further, optimize water management and offer scientific basis
摘要本研究以泰安市地面飲用水源地黃前水庫為對象，通過對庫區水質27項指標的連續監測，分析評價了水庫水質時空變異規律，揭示了水庫主要污染物及其產生原因，並提出了相應的解決措施，為有針對性地保護飲用水源，進一步改善水質，優化水源管理提供了科學依據。 -
To use a method of statistical analysis to describe the trend of river water quality change in recent 50 years
用統計分析的方法描繪河水水質近50年的變化趨勢。 -
Hebei province surface water quality and water quantity change law analysis
河北省地表水水質水量變化規律分析 -
In the early days, beaches were ranked into four categories : good, acceptable, marginally acceptable, and unacceptable, based on their percentage of compliance with the hong kong water quality standards of the day. once the epd s own studies were completed in the late 1980s, however, the system was revised and linked to health risks. this involved a change in the category labels, which between 1990 and 1992 evolved into those used today
在實施早期，全港泳灘按照香港當時採用的水質標準分為四級：良好一般偏差和欠佳，環保署於1980年代後期完成科學研究后，便隨即修訂了級別制度，使泳灘級別更能準確地反映健康風險，分級制度亦在1990至1992年間更改為今天所見的級別。
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