污染分佈 的英文怎麼說
中文拼音 [wūrǎnfēnbù]
污染分佈
英文
contaminated distribution-
The research indicates that the modern sediment is divided three layers : polluted layer, transition zone and unpolluted layer. just the pollute layer cause dianchi lake environmental pollution. the high value district of ammoniac nitrogen distributes near northern part haigeng mainly, middle part increase slightly, have most lower near southern part, the content of ammoniac nitrogen of the polluted layer sediment lower than the lower layer ; the high value district of effective phosphorus distributes near haikou - jinning, from the north to the south, the content of effective phosphorus increases progressively, the content of effective phosphorus of the polluted layer sediment obviously higher than the lower layer
研究結果表明：滇池現代沉積物主要分為三層，污染層、過渡層和未污染的湖泊沉積層，其中污染層是對滇池環境污染造成影響的層位；氨氮的高值區主要分佈在北部海埂附近，中部略有增高，南部則最低，表層沉積物的氨氮含量低於下層；而有效磷的高值區則分佈在海口?晉寧附近，由北向南，有效磷的含量依次遞增，表層有效磷的含量要明顯高於底層。Using cd, cu, zn and cr as experimental toxicants and crucian as experimental creature, we employed the environmental biotechniques ( flame atomic absorption spectrophotometry, the method of improved pyrogallol autoxidation and electron microscopy ) to study the acute toxicity and secure concentrations of heavy metals to crucian ; the accumulation and distribution of mixed heavy metals to fingling crucian ; the activities of superoxide dismutase ( sod ) of gill and liver tissues and the hispathological and ultrastructural change of superfine structure of liver and kidney of crucian after cadmium exposure. through which, we intended to fully and systemically study the toxic influence of heavy metals to fish, and preliminarily discuss the influence of heavy metals pollution to the diversified level of fish such as individual, organ, tissue, cell and molecule. thus we tried to provide scientific evidence to establish preventative management measures, avoid and relieve the harm of heavy metals pollution to aquicolous ecosystem in time
隨后以這幾種重金屬作為實驗毒物，以鯽魚為實驗動物，應用環境生物技術、火焰原子吸收分光光度法、鄰苯三酚自氧化法、透射電鏡等技術研究了重金屬cu 、 zn 、 cd和cr對鯽魚的急性毒性及其安全濃度評價、混合重金屬在鯽魚幼體組織內的積累和分佈、 cd對鯽魚鰓和肝臟中sod活性的影響、 cd對鯽魚肝細胞和腎細胞超微結構的影響等，全面和系統地研究了水環境中重金屬暴露對魚類的毒性影響，初步探討了重金屬污染對魚類的個體? ?器官? ?組織? ?細胞? ?分子等各水平層次的影響，為制定漁業生產上預防性的管理措施提供科學依據，及時避免或減輕重金屬污染對水生生態系統造成的損害。The research results show that synthesis pollution index is under the contaminative level, but there is 40. 81 % of the farmland soil area on the critical line of pollution. specified to the individual pollution index as b, cd and pesticide are on the comt
就污染分佈看，一級地中74 . 47 %的土壤處于警戒線水平，二級地中57 . 63 %的土壤處于安全水平;三級地中62 . 24 %的土壤處于安全水平;四級地中71 . 48 %的土壤處于安全水平。In the model the film thickness in the passage was obtained at first using two phase flow theory ; then, similar analysis solution of concentration distribution of the pollutant in liquid phase and biofilm was obtained through mass component equation of pollutant in gas - liquid phases combined with the biochemical kinetic equation of mass transfer in biofilm and dismission of oxygen limited ; at last, the distribution of pollutant along the filter height and the waste gas purification efficiency were obtained
該模型首先運用兩相流理論獲得了通道內液膜厚度，然後通過污染物在氣相、液相的質量組分方程，結合生物膜內的傳質與不?慮氧限制的生化反應動力學方程，獲得了污染物在液相和生物膜中濃度分佈的近似分析解，最終得到污染物在氣相中沿塔高的濃度分佈及廢氣凈化效率。Abstract : under the base of investigation and research on natural radioactive nuclein in coal of yili area, combining with the distributing characteristic and law of radioactive nuclein in coal of area and residents ' customer of using coal in yili area, the article raises decrement, resources, harmless and prevention and control measure of whole course managing rule with having a definite object in view and put foward a feasible plan and way for economie developmant of yili area, resonable development and utilization of coal resources, preventing from pollution because of mining and utilizing coal and further protecting people ' s health
文摘:在對伊犁地區煤中天然放射性核素調查研究的基礎上，結合伊犁地區煤中放射性核素分佈的特點、規律以及伊犁地區居民的用煤習慣，有的放矢的提出了減量化、資源化、無害化以及全過程管理原則的防治措施，為伊犁地區的經濟發展，煤炭資源的合理開發和利用，防止因煤炭的開采利用而造成的污染，建設性的提出了切實可行的方案和途徑。Poiycyclic aromatic hydrocarbons ( pah ) are priority trace organic pollutants in the clrtap ( convention on long - range transboundary air poliution ) pops ( persistent organic poilutants ) protocol. both laboratory experiments and fie1d surveys unequivocally demonstrated that pah adversely affect estuarine and marine organisms. pah are implicated in the development of iesions and tumors in fish, they produce biochemical disruptions and cell damage that iead to mutations, developmental malformations and cancel although many marine organisms do not exhibit acute responses to pah " exposure, but suffer sublethal effects
本論文以湄洲灣海域和廈門西海域養殖區為研究區域，採用現代分析技術，從分子水平上系統研究了多環芳烴（ pah ）在海水、沉積物、養殖魚類中的含量分佈：通過現場實驗，實驗室暫養、投毒和恢復實驗系統測定了養殖魚類的肝臟、膽汁、鰓、全血等不同器官、組織的生化指標及養殖魚類肝臟、膽汁的化學指標，探討了這些指標對水環境多環芳烴污染的生物指示作用。Two methods were used to provide water quality ratings in bio - assessment using biotic index ( bi ), ( 1 ) using the sampled sites meet the criteria for undisturbed and minimally impaired conditions, the confidence in the distribution of bi value for the 75th percentile to be used as the criterion dividing " unimpaired " form " impaired ". any values below the 75th percentile were considered as " excellent ", and values above the 75th percentile, was quadrisected for different water quality ratings
採用兩種方法研究m指數劃分水質級別的標準： （ 1 ）無污染樣點的m指數值法，以75分位數值作為最清潔水質標準，將高於此值的可能分佈范圍一等分，分別代表不同的水質級別zk ）所有樣點（污染與無污染樣點）的bi指數值法，以5分位數值作為最清潔水質的標準，將高於此值的可能分佈范圍4等分，分別代表不同的水質級別。Long - term high temperature not only could decrease the resistibility of the body, but also can cause the pollution of the air and waterhead, the scarcity of food, production of the bacillus and virus, sequentially affect distri - bution of the infectious disease
在長期的高溫條件下，不僅會降低身體的抵抗力，而且可以導致空氣和水源的污染、食物的短缺以及細菌、病毒的產生，從而影響傳染病在人群中的分佈。Spatial distribution and time scales of atmospheric diffusion over beijing area are revealed by means of a random walk simulation model and practical meteorological data with a specified emission source from the city. results show a southward transport pattern for wintertime while a northwest transport of pollutants in summer. the area is the least evidently influenced by the emission source in spring, while the largest in autumn. the time spent for instantly emitted material removing from the model domain varies from winter - spring to summer - autumn. the former was shorter one of less than 20 hours ; the latter was longer one of approximately 30 hours. distribution of occurrence probability for different removal times was not symmetry. reducing slowly at the end of longer removal time, probability exists for pollutants remaining in this area a long time
結果表明，冬季示蹤物偏南夏季偏西北的輸送明顯春季擴散影響范圍最小秋季最大。示蹤物從200km200km模式區域輸出的平均時間去除時間明顯分為冬春季和夏秋季兩組，前者較小，平均在20h以下，後者較大，平均約30h 。不同去除時間出現的頻率分佈是非對稱的，在長去除時間一側，出現頻率下降緩慢，顯示污染物有在該區域內長時間滯留的可能。By the numerical simulation, calculate the distribution of velocity ^ temperature and contaminant concentration of air in the room under different modes of air flow organization, and through analysing the outcomes of simulation, draw some conclusions
對常見的辦公室環境，不同送回風方式下的室內空氣的速度、溫度及污染物濃度的分佈進行模擬計算，並對模擬結果進行分析，得出結論。Based these researches acquired and using a mathmatical model, this thesis tries to research the contaminant concentration distributions of three - dimention indoor turbulent flow by means of computational fluid dynamics and heat transfer, and then works out the ventilation efficiency
本文企圖在前人的基礎上，通過建立相應的數學模型，用流體流動數值計算方法來模擬室內三維的紊態氣流中的污染物濃度分佈，進而分析計算室內的通風效率，得出通風效率較好的室內氣流組織形式。The change of contaminating material concentration after installing electrostatic filter in air supply duct is compared. the contaminating material concentration formulas at different height of assembling cleanroom are deduced
比較了在裝配式潔凈室空調系統的送風管道中安裝管道式靜電吸附過濾器后，對室內污染物質分佈的影響。From the aspect of area distribution, problem of water environment and factors of population, society and economy do n ' t coordinate with each other : in those areas which are rich in water, there are serious pollution and waste ; in those which are lack of water, economy is relatively behind the times ; in those where there is less lack of water, high population density faces the water resource with great potential pressure
水環境問題與人口、社會、經濟等因素在地區分佈上很不協調，如水資源豐富地區，水污染與水浪費十分嚴重；缺水地區，經濟相對落後；缺水程度低的地區，人口密度較高，使水資源存在巨大的潛在壓力。在影響水環境的相關因素中，人口因素的作用十分突出，主要表現在兩個方面：一是地區人口數量與分佈的集中程度是決定水資源壓力及相關水環境問題的真下因素；二是人口素質與水管理水平之間具有一定的正相關關系。The ditches are the first pool of diffuse nutrients from rain runoff and field drainage, and are shaped to a net work in the area of the lower reaches of the changjiang river where the cultivation manner of fields are rotation of rice and wheat. now we have learnt little about the mechanisms of pollutants trasport and transformation in ditch wetlands
長江下游水稻-小麥輪種區溝渠濕地呈網路狀密集分佈，是降雨徑流和農田排水的首要匯聚地，我們對污染物在溝渠濕地中遷移轉化的機理還知之甚少，本文分析了： 1In addition to the fixed ground - based radiation monitoring network, aerial and mobile ground surveys will be conducted to determine whether there is radioactive material over hong kong, and if so, the extent of its spread and whether any parts of the territory have been contaminated
除了使用輻射監測網路外，天文臺更會在境內進行空中及地面輻射巡測，以確定本港是否受放射性物質影響，並進一步偵測其污染程度及分佈情況。Study on lead pollution and its distribution in the soil on the highway - sidesof mountain area
山區公路邊土壤鉛污染水平及其分佈規律研究Relationship and simulation information system of land use cover change and non - point source pollution in yangtze river basin
南京某地農業土壤中有機污染分佈狀況研究The research and actions taken by the government in this aspect in recent years include a study on regional air quality jointly conducted by the hong kong epd and the guangdong environmental protection bureau during 1999 to 2002. the results include an emissions inventory of the pearl river delta ( prd ) with 1997 as the base year to determine the locations of pollution sources and their amount of emissions. computer simulation was further employed to figure out the distribution of pollution and to calculate quantifiable options for controlling pollution sources
近年政府在這方面的研究工作包括一九九九至二二年間環保署聯同廣東省環保局進行的區域空氣質素研究，結果包括了一套以一九九七年為基本年的珠三角排放清單，確定污染源的位置及排量；再用電腦模擬做出污染分佈的情況，計算出控制污染源的量化方案。Based on comprehensive investigation to hydrology present situation, quantity and distribution of pollutional sources, drainage situation of waste water and water ' s pollution matters, location distribution of drainage of waste water, quality of river water and underground water, drainage pipe system and environmental hygiene in eastern city - guarding river valley, the author exhaustively analyzes the cause of exsiting environmental problems and provides suggestions in comprehensive administration of eastern city - guarding river
摘要在對東護城河流域水文現狀、污染源數量及分佈、廢水及污染物排放情況、排污口分佈、河流水質、地下水水質、流域內排水管網和環境衛生狀況進行認真調查的基礎上，對其存在的環境問題及其成因進行了詳細分析，並提出了具體的流域綜合治理建議。The local and regional distribution of pollutants is significantly influenced by weather patterns and variability along with the spatial patterns of emissions
地區性的空氣污染分佈顯著的受空氣模式及排放特性及變化所影響。分享友人