能蒸散的 的英文怎麼說
中文拼音 [néngzhēngsǎnde]
能蒸散的
英文
transpirable-
This article introduces briefly the process of design and characteristic of structure of db930 tube and discusses the main problems of technology and technique which was met during the manufacture and the measures having been adopted are emphatically. it discusses the solve measures in following six aspects : the filament current is too large, carbon deposits during the carbonizing of cathode, the capacitance between the first grid and the second grid is too large, transpiring happens inside the tube, the insulation resistance between the electrodes is too lower when the filament is on and the ability of bearing high voltage is too lower
本文簡略地介紹了db930的設計過程及其結構特點,重點論述了在試制過程中遇到的主要工藝技術問題及解決問題的措施,圍繞解決燈絲電流大、陰極碳化時積碳、一柵和二柵之間的電容大、管內蒸散、熱態時極間絕緣低、耐高壓的能力差等六個方面的問題進行了論述。Assuming that the moisture contents in the lysimeter at the time of measurement remain the same as the previous day, the difference between the added water and the overflow represents the potential evapotranspiration
假定蒸散量測定裝置內的含水量在兩次量度時間之間保持不變,則灑上草面水分和漏出水分之差即代表可能蒸散量。Breathability should be considered as moisture vapor transmission and moisture can be transmitted even through non - air permeable fabrics
透氣性應該被認為是潮濕的水蒸氣散發出去,即使是完全不具有空氣滲透性的纖維,潮氣也有可能是能被散發出去了。The middle and lower parts of woodland and grassland had higher soil water contents during rainy season, which resulted from smaller evapotranspiration and more infiltrated water with a lower gradient. however, upslope runoff infiltration was another reason for hillslope with a lower cover ratio, such as bare land
雨季林草地坡中下部土壤水分含量較高的原因,可能主要與其蒸散較小且坡度較緩導致入滲水量較多有關;但是對于植被覆蓋度較低的坡地(如裸地) ,坡中下部土壤水分含量較高還與上方來水有較大的關系。The developed apparatus can automatically measure evapotranspiration at setting up interval and memory the data through a 32 kilobyte data storage memory. measured data can be transmitted to personal computer by rs232 series communication interface. apparatus will be trigged at measurement time by a real time chip set in it
該儀器通過實時時鐘晶元實現間隔採集動作的觸發及時間、日期的計數;利用液晶顯示器( lcd )進行顯示;使用它能在無人監管的工作環境下,定時進行蒸散測量並將測得數據自動保存到32k數據存儲器中;再通過rs232串列通訊介面將數據傳送到pc機進行進一步處理。B2o3 could barrier the diffusion of o2 and na2so4 steam into interphase downwards of 1273k of volatilization temperature of b2o3
氧化硼在其揮發溫度( 1273k )以下能夠有效阻擋氧及部分硫酸鈉蒸汽的進一步擴散,從而保護了纖維。Through analyzing the effect of temperature and nitrogen on crude oil viscosity the influences of different nitrogen injection volume and injection modes on steam displacement are contrasted, the mechanism of nitrogen - assisted steam stimulation is clarified, which includes : heat carrying capacity is raised, the saturation of remaining oil is reduced after nitrogen - assisted injection is made ; crude oil flow is enhanced because of nitrogen compression and dispersion and the change of oil flow shape ; water back - production rate is improved by expanding the steam sweep volume and compensating in - situ energy ; steam distillation effect is enhanced
通過分析溫度、氮氣對原油粘度的影響,對比不同注氮量、不同注入方式等對蒸汽驅油效果的影響,弄清了氮氣輔助蒸汽增產的機理主要表現在:氮氣輔助后增加攜熱能力,降低殘余油飽和度,氮氣的壓縮膨脹作用分散和改變了原油流動形態,增強了原油流動性;擴大蒸汽的波及體積,補充地層能量,提高回採水率,強化蒸汽蒸餾效應。In short, through retrieving the parameter such as surface albedo, surface temperature and surface emissivity, all the energy flux such as net radiance flux, soil heat flux and latent heat flux can be computed in sequence further, then latent heat flux which provide energy for et can be computed based on energy balance equation, finally instantaneous et and daily et can be obtained
總之,根據地表能量平衡方程,通過計算對地表反照率、地表溫度、地表比輻射系數、歸一化植被指數等參數進行反演,進一步計算出了地表凈輻射通量,土壤熱通量和潛熱通量,最後獲得了遙感影像成像時的瞬時蒸散及當天的總蒸散量。The objectives of this study are : ( 1 ) collect the basis data about soil physical properties, soil moisture, infiltration and evapotranspiration in the catchment scale for developing a catchment hydrological model, based on the dtm, ( 2 ) provide the hydrological information in the catchment scale for developing agricultural production, vegetation rehabilitation, and reasonable land using in this region. the main conclusions drawn from this study are : ( 1 ) the soil physical properties, including bulk density, saturated soil moisture, field capacity, and wilting moisture, were measured at 56 plots across the catchment
為此,本文以黃土高原溝壑區典型小流域?王東溝為研究對象,通過大量的野外測定和室內分析,系統研究了流域土壤容重、土壤飽和含水量、田間持水量、萎蔫濕度、土壤入滲性能、土壤含水量和蒸散量的空間變異性,以期為該區農業生產、植被恢復和土地合理利用等提供科學的依據,同時為建立基於數字高程模型( dtm )為基礎的流域水文模型積累基礎資料。Soil heat flux from atmosphere to soil is about 5 % of net radiation on a clear and cloudy day and soil discharge energy to atmosphere on a rainy day above the same field. in brief, average latent heat, sensible heat and soil heat flux is 40 %. 50 % and 10 % of net radiation respectively
在春小麥下墊面,晴天能量主要消耗于農田蒸散,而在陰天顯熱交換大於農田蒸散耗熱;在晴天和陰天大氣向土壤的能量傳輸均維持在凈輻射的5左右,雨天時,土壤熱通量為負值。On the base of the palmer drought severity model of america and the modificated palmer drought severity model ( 1986 ), we further modificate the palmer drought severity model in the following aspects ; ? 4 stations were chosen to develope the model and adjust the weighting factor ; ? he potential evapotranspiration for an each month was computed by the penman - monteith equation commended by fao ; ( 3 ) the getting of available water capacity of the soil ( awc ) in each station was based on the data of awc that we can find and the characteristic of soil in each station
在美國帕默爾旱度模式和我國1985年修正的帕默爾旱度模式的基礎上,針對其中存在的問題,從建模選用較多站點、可能蒸散計算採用彭曼?蒙特斯公式和土壤田間有效持水量進一步準確劃分等三個方面進一步修正了帕默爾旱度模式。The model should be coupled with other model such as random rainfall model, evapotraspiration model etc, and avoid subject factor effect. the aim is to evince accurately general law of caco3 deposition, provide scientific basis for making strategic decisions on soil management and environment protection
同時,所建模型有待于結合影響caco _ 3淀積綜合因素的其他因素模型如隨機降水模型、蒸散模型等( marion等, 1985 )建立耦合系統模型並加以改進完善,避免主觀因素影響,使其能準確地反映caco _ 3淀積的一般規律,指導土壤管理和環境保護。This information, together with surface observations of sunshine duration, global solar radiation, soil and grass minimum temperatures, evaporation and potential evapotranspiration, are essential for many fields of studies including climatology, hydrology, agriculture and civil engineering design
此等資料與及其他地面觀測,例如日照時間太陽總輻射土壤溫度最低草溫蒸發量及可能蒸散量等,對于很多研究領域,包括氣候學水文學農業及土木工程設計等,都是不可缺少的。Daily measurements have been made at king s park since 1951
每日的可能蒸散量自一九五一年起在京士柏量度。Potential evapotranspiration is defined as the evapotranspiration that would occur if a plant is supplied with ample moisture at all times
可能蒸散量的定義則為在植物表面經常保持濕潤的狀況下所可能出現的蒸散量。In order to maintain the sustainable use of land and water resource, to protect the land from desertification and to make longyangxia reservoir safe, firstly, the spatially disturbed model has been established in which includes dem - based precipitation and runoff, regional transpiration and regional water balance modules in gonghe. secondly, the model of grassland climate potential productivity and the model of grassland productivity modified by plant water demand and stocking intensity factors has been constructed in gonghe. according to the carrying capacity and the actual amount of animals on the grassland, coupled with actual grassland investigation, and by using social - economic data, the grassland productivity, species composition, biotope and the cause of desertification has been analyzed
為了做到對本區的水土資源的可持續利用、防治本區的荒漠化和保護龍羊峽水庫,所以基於dem和已有的氣象、水文長短期觀測和實測數據,首先構建了青海共和盆地降雨、徑流、蒸散和區域水分平衡的分散式模型;進一步在此基礎上,構建了青海共和盆地草地生產力的模型和基於作物水分耗散與放牧因子校正的青海共和盆地草地生產力模型;利用草地載畜能力和現有牲畜量以及社會經濟因子等統計數據,結合實地調查,分析了青海共和盆地草地生產力、物種構成、生境變化和荒漠化成因及其內在驅動因子,並對草地可持續利用做了評價。Acceding to the theory of crop water requirement, maximum potential evapotranspirations are calculated by applying fao penman - monteith method, and then we obtain the water requirement, water balance and water correction factors ect. of main crops ( spring maize, summer maize, spring wheat, winter wheat, cotton ) and different type grasslands, and the space - time distribution regularities of water requirement of cropland and natural grassland are analysed, the result show : the water requirements of same kind crop in different areas are different, water satified degrees are different to different crops in the same area, and water requirement of same crop are different between years for climatic variation ; the water requirements of main crops are increasing from east to west and from south to north, water satified degrees are decreasing from east to west and from south to north. in growing season, there are deficits in crops water supply in most area, so the irrigation is needed to meet the requirement for crop growing normally
根據作物需水的理論和方法,採用計算精度較高的faopenman - monteith方法( 1998 )計算了半乾旱區最大可能蒸散,並基於此計算五種主要旱地作物(春玉米、夏玉米、春小麥、冬小麥、棉花)和不同類型的天然草地的需水量、水分盈虧、水分訂正系數等,分析了農田和天然草地水分供需的時空分佈規律,結果表明:不同地區同一種作物的需水量是不同的,同一地區對不同作物的水分滿足程度是不同的,而且同一種作物在同一地區隨著氣候的變化需水量也會有一個年際變化;主要作物需水量由東向西,由南向北遞增,正常生長發育的水分保證程度由東向西,由南向北遞減。Its maximum absolute error is about ? 3g and maximum relative error is only about 0. 4 %. evapotranspiration of tomato measured by our apparatus in laboratory during a consecutive period presents very well its change in reality
其測定值能較好地反映植物在短?段內的蒸散變化情況,是一種比較方便實用的測定盆栽植物蒸散的儀器。Hygrothermal performance of building equipment and industrial installations - calculation of water vapour diffusion - cold pipe insulation systems
建築設備和工業設施的溫濕性能.水蒸氣擴散的計算.冷凝管隔熱系統Potential evapotranspiration is defined as the evapotranspiration that would occur if a plant is supplied with ample moisture at all times. daily measurements have been made at king s park since 1951
可能蒸散量的定義則為在植物表面經常保持濕潤的狀況下所可能出現的蒸散量。分享友人