降雨歷時 的英文怎麼說

中文拼音 [jiàngshí]
降雨歷時 英文
duration of rainfall
  • : 降動詞1. (投降) surrender; capitulate 2. (降伏) subdue; vanquish; tame
  • : 雨名詞(從雲層中降向地面的水) rain
  • : Ⅰ名詞1 (經歷) experience 2 [天文學] (歷法) calendar 3 (歷書; 年鑒; 歷本) almanac Ⅱ動詞(經...
  • : shí]Ⅰ名1 (比較長的一段時間)time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 降雨 : rainfall降雨持續時間 time of the duration of rainfall; 降雨歷時 rainfall duration; 降雨時數 rainf...
  • 歷時 : last; take
  1. Meanwhile, an artificial imitation rainfall system was developed in order to study the characteristics of city underlying surface and make experimental check up about the relative appraising index, on which 200 rainfall experiments are made, analyzing the effect of rainfall intensity to the runoff of underlying surface ; the relationship between runoff permeability and unit factor of rainfall intensity and duration ; the effect of rainfall intensity, duration, soil moisture content, and temperature to the runoff permeability ; the relationship between rainfall quantity and runoff permeability, and make mathematical imitation to the expe rimental results, to find the mutual - relationships, and make discussion about the differences between equations of fit

    ,為研究城市下墊面的產匯流特性研製了一套人工模擬系統,並對相關評價指標進行了實測校驗。在此基礎上,進行了200多場實驗,分析了強、、土壤前期含水量、溫度、量、不同下墊面和不同覆蓋度等對產匯流的影響,及各種因素對徑流系數的影響和相關性,建立了一定條件下徑流系數,強徑流系數,流量徑流系數的函數模型。
  2. When soil antecedent condition is dry and the initial rainfall intensity is high, peak surface runoff also considerably lag behind that of rainfall, because of the formation of temporary relative impermeable top layer ; b ) surface runoff is controlled primarily by infiltration - excess runoff mechanism under unsaturated condition ; the major fraction of surface runoff are dominated by saturated infiltration - excess runoff response, only a small fraction by return flow mechanism when soil is saturated ; c ) subsurface flow is dominated by saturated runoff mechanism, and the duration of subsurface post the rainfall end is dependent upon rather the soil properties than the rainfall characteristics ; d ) subsurface flow intensity in cultivated soil layer ( 0 ~ 20cm ) is high up to 35mm / h when rainfall intensity is up to 120mm / h, indicating the existing of macropores and pipe flow in cultivated layer

    2 )耕作制下紫色土的產流主要機制是: 1 )當前土壤含水量未達到飽和狀態,表面產流起始間有明顯滯后現象,這與紫色土的快吸水性和較多非毛管孔隙密切相關;當前土壤較乾燥,初期強較大,易形成臨相對不透水表層,表面產流峰也有明顯滯后現象。 2 )表面徑流的產流方式主要是超滲產流,當土壤達到飽和狀態后,有四川大學博士學位論文小部分回歸流發生,但主要是飽和超滲產流發生,因為紫色土的相對不透水層和其它透水障礙層不明顯。 3 )壤中流主要是飽和產流,與過程有明顯的滯后,而且停后的壤中流產流特徵無關。
  3. It can realize the automatic measurement rainfall and sequence record history datum on time with the rtc ; the system can be taken notes history datum more than 1 month at least ; communication interface supported by the serial communication interface can link with the pc ' s rs232, telephone network and mobile telephone network ; it can persist in working with backup power more than 1 day when the local junction circuit stops providing electricity

    它可以實現自動測量量;具備實鐘,按間順序記錄史資料,系統至少能夠記錄1月以上的史資料;具備串列通訊介面,通訊介面應支持如下功能:與pc計算機的rs232介面、與電話網連接、與移動通訊網連接;具有后備電源,在市電斷電能堅持工作1天以上。
  4. On the basis of analysis for recharge, flow - off and drainage of research area, the paper concludes that the main possible cause for the fall of water head is groundwater exploitation by comparing the curve of rainfall - time and the curve of observation heads of some observation well

    在充分分析研究區補給、徑流和排泄規律的基礎上,文章通過比較降雨歷時曲線、部分觀測孔觀測水頭曲線得出開采量可能是影響水頭下的主要因素。
  5. Based on the rainfall data in autumn, an analysis of synthesis profit, such as autumn rainfall utilized in spring, the change of soil moisture, water storage variation in qinghai lake and so on, of the artificial precipitation is made

    摘要據2001年秋季人工增資料,結合年秋季水資料,從秋春用、影響地下水位涵養、青海湖水量盈虧等方面分析了秋季人工增的綜合效益;並著重分析了秋季水與環湖地區土壤水分貯量以及第二年春季環湖天然草場土壤墑情、牧草返青間、生長狀況及產量的關系。
  6. The result indicated that with the delay of rainfall the slope safety lowered accordingly and the unstable sliding plane was the shallow slide

    研究表明,隨降雨歷時的增加邊坡的安全系數逐漸變小,邊坡最危險滑動面有向淺層發展的趨勢。
  7. With the same slope gradient and slope length, the soil erosion on the dyke slope caused by the runoff mainly depended on the factors such as the runoff, flow velocity, rainfall intensity, rainfall duration, as well as the up - slope drainage area of dyke slope

    坡度、坡長一定,徑流對戧坡的侵蝕主要與徑流量、流速、強、降雨歷時,戧坡以上匯聚水量或集水面積有關。
  8. 3. the study on the parameters that affect the seepage field of unsaturated slopes based on the existent program of 3 - d saturated - unsaturated seepage, mainly including ( 1 ) the combination of different rainfall intensity, duration, and type ; ( 2 ) the essence of medium, e. g

    利用已有的三維飽和-非飽和滲流程序對在條件下影響非飽和邊坡滲流場的參數進行研究,主要包括: ( 1 )不同強度、降雨歷時型等類型組合; ( 2
  9. By monitoring the quality of the roof rainwater gathered in shanghai and analyzing the main influential factors as well as the pollution level, it is found that roof material, rainfall duration, rainfall intensity and volume are important influential factors affecting the quality of runoff from roofs

    摘要通過對上海市屋面水水質監測,及對其污染主要影響因素與污染程度的分析表明,屋面材料、降雨歷時強度及量等是屋面徑流水水質的重要影響因素。
  10. Based on the analysis of the data and information from the field observations and lab experiments, the results were as follows : ( 1 ) the results of the simulated rainfall and runoff erosion experiments in lab. under the design experiment conditions including the constant rainfall intensities of 1. 0, 2. 0, 3. 0mm / min and the rainfall durations of 30, 70 minutes and with soil moisture content 9. 5 % or 10. 0 % for dry situation, as well as with the soil moisture content 19. 0 % or 20. 0 % for wet situation, the soil erosion increased nonlinearly with the rainfall intensity, and the rainfall duration. the results of the experiments indicated that the amount of soil erosion caused by the simulated rainfall and runoff on the dry - soil slope was more than that on the wet - soil slope

    通過實地觀測及室內試驗資料分析,得到如下研究成果: 1 、室內模擬徑流對戧坡的侵蝕試驗研究結果在定強為1 . 0 、 2 . 0 、 3 . 0mm min ,降雨歷時30 、 70分鐘,干土含水量為9 . 5 10 . 0 ,濕土含水量為19 . 0 20 . 0的條件下,侵蝕量與強成非線性正比關系;強大,侵蝕量大;降雨歷時長,侵蝕量也大;堤坡含水量大,侵蝕量小,堤坡含水量小侵蝕量大。
  11. The research showed that pam could improve soil structure, and greatly increase the stabilization of soil aggregates, so soil crust development would be decreased. fifthly, soil grain that controls rainfall splash erosion was obtained, the influence of soil clay was very great during initial stages of rainfall. with rainfall going on, soil coarse sand and fine sand would control the splash erosion

    五、控制土壤濺蝕的主要土壤粒級:在初期土壤的的粘粒對濺蝕速率的影響較大,隨著降雨歷時的延長,土壤中的細砂和粗砂成為濺蝕速率影響較大的因子;六、對土壤濺蝕影響較大的土壤結構特徵因子:5分鐘,土壤的滲透系數對濺蝕速率的影響較大,隨著的繼續進行,土壤的團聚度一直對土壤濺蝕速率影響較大。
  12. Abstract : based on the data from the runoff plots, analyzed on the regularity and affected factor of the runoff and sediment yield in the farmland with different underlayer condition in the loess hilly areas of changwu county, shaanxi province, and point out that the main factor which affect the runoff and sediment yields in the farmland of the loess hilly areas are the intensity of precipitation, the time of precipitation, slope and the mulching condition

    文摘:以徑流小區的觀測資料為依據,對陜西長武不同下墊面條件農田產流產沙規律及影響因素進行了分析,指出強度、降雨歷時、坡度和覆蓋條件是影響黃土溝壑區農田產流產沙的最主要因素。
  13. We systemically discussed the distribution of precipitation, dynamics of soil erosion in different land - use types, the relation between soil and water losses and some rainfall characteristics, such as rainfall amount, intensity, duration and prophase rainfall. further, rainfall erosion force was discussed and regression equations between soil and water losses and rainfall characteristics were founded

    較為系統的探討了閩江上游地區的分佈特徵,不同土地利用方式的水土流失動態,不同土地利用方式水土流失與量、強度、降雨歷時、前期等的關系,在此基礎上,初步探討了閩江上游的侵蝕力,並建立了不同土地利用方式水土流失與特性有關的回歸方程。
  14. 3. through analyzing the erosion energy characteristic of different rainfall capacity, rainfall duration, and runoff depth classes, we draw that rainfall kinetic energy and runoff energy presented positive correlation with the rainfall duration. and presenting the fluctuation change with extension that rainfall duration ; runoff energy increase with increase of runoff depth

    ( 3 )通過分析不同量、降雨歷時、徑流深量級中侵蝕能量特徵,得出動能和徑流能量都與量基本呈正相關;隨降雨歷時的延長呈波動性變化;徑流能量隨徑流深的增加而增加。
  15. Annual precipitation series about 50 years is stable and no period ; further, the climate drying and desertification are n ' t caused directly by the decrease of precipitation during the period of the research according to the relational analysis among precipitation temporal - spatial change, runoff, evaporation, potential evapotranspiration and soil water ; longyangxia reservoir which was built in 1986 does n ' t have influence on precipitation up to now ; but annual temperature series in gonghe is unstable, having a linear upward trend, and it increases about 0. 0247, 0. 0422 and 0. 0272c per year, and temperature rise must be having an influence on desertification, but there is a very little temperature change, so that the effect is very small ; annual potential evapotranspiration series is stable too, so climate change has little influence on plant water consumption. 2

    在青海共和盆地,近50年的年量序列是平穩的、無周期,其空變化與徑流、蒸發、潛在蒸散和土壤水分的關系表明,氣候乾燥和嚴重的荒漠化不是由於量減少直接引起,龍羊峽水庫對共和盆地年量變化沒有影響;但是年氣溫序列是非平穩的,茶卡、恰卜恰和貴南的年氣溫平均每年升高0 . 0247 、 0 . 0422和0 . 0272 ,且氣溫升高2 ,年潛在蒸散增加57mm ,盆地內氣候逐漸變乾燥,但影響比較小;由於年潛在蒸散序列是平穩的,因此氣候變化對盆地的作物潛在蒸散的影響在研究期內是較小的。
  16. This work aims at studying multi - scale structures of large - scale stratiform precipitating clouds typical of henan province of central - eastern china in spring and autumn drought periods of china, the potentials and techniques of artificial rain increase. through analysis of historical weather / climate and cloud physical data, developed are a number of multi - scale observational schemes including intensive observational items, and space / time resolutions of data for integrative field observations to obtain real - time measurements of the structures at large -, medium -, small - and micro - scale. from analysis of observed separate items, their integrative treatment and numerical simulation we place focus on case studies and their integration in investigating such structures of stratiform precipitating clouds over the target region, rainfall physical mechanisms and exploitation of artificial rainfall increase potentials, whereupon a conceptual model is constructed and a range of catalysis schemes are proposed to improve smaller - scale forecasting accracy and techniques for the rainfall increase, with the dominant results given below

    以地處中原、具有典型代表意義的河南層狀水雲系為主要研究對象,在對該地史天氣氣候和雲物理等資料分析的基礎上,研究設計雲系多尺度觀測方案(包括加密觀測項目、觀測空解析度) ,實施有設計的外場綜合觀測,獲取雲系結構多尺度(大、中、小、微)配套的實觀測資料;通過對各種觀測資料的分項和綜合處理分析,以典型個例觀測和數值模擬分析研究為重點,綜合多個例分析,研究河南層狀水雲系多尺度宏微觀結構特徵、水物理機制和人工增潛力條件,建立典型層狀雲系人工增概念模型,研究科學的人工增作業技術系統。
  17. The curve of h1was descending, and the others soils were ascending during prophase of rainfall, descending after 10min

    從濺蝕率過程看, h1濺蝕率呈下趨勢,其餘土樣的濺蝕率在初先升高, 10min後下
  18. The instantaneous unit hydrograph theory would be suitable for the high antecedent baseflow and the high rainfall intensity to estimate the direct runoff, but it still needs to prove its fitness with much more cases

    在臨前基流量較大或強度較大,應用瞬單位線理論分析逕流特性之準確性較高,然確實之適用條件仍有待進一步之研究。
  19. A steep rise in sea levels swamped part of the historic lagooon city of venice amid storms and heavy rains that have beaten down on italy over the past 24 hours

    大風和強在過去24小內「光臨」了義大利,該國東北部史名城威尼斯包括聖馬可廣場在內的部分城區被突然升高的海平面淹沒。
  20. The distribution of seepage field is one of the most important factors that affect the stability and deformation of slopes. and rainfalls, especially long - lasting and heavy rainstorms, induce landslides even more

    邊坡中的滲透水壓力和滲流場分佈是影響邊坡穩定和變形的重要因素之一,而,特別是長、強度大的暴更是導致邊坡失穩破壞的常遇誘導因素。
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