射影集合 的英文怎麼說

中文拼音 [shèyǐngjígě]
射影集合 英文
projective set
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 影 : Ⅰ名詞1 （物體擋住光線后映出的形象） shadow 2 （鏡中、水面等反映出來的物體形象） reflection; image...
  • 集 : gatherassemblecollect
  • 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
  • 集合 : 1 （聚集） gather; assemble; muster; call together 2 [數學] [自動化] [計算機] assemblage; set; co...
  1. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  2. As a comparison, ba1. 03ce0. 8gd0. 2o3 - was synthesized by sol - gel method. among these samples, nonstoichiometric samples were synthesized for the first time. the research work involved : the crystal phase of the sinters were determined by xrd ; ionic conduction under different experimental atmospheres was measured by gas concentration cells ; performances of hydrogen - air fuel cells with the sinters as electrolytes and porous pt as electrodes were measured

    用粉末x射線衍射儀鑒定它們的結晶相；在（ 600 1000 ）范圍內，以燒結體作為電解質隔膜，多孔性pt黑為正、負電極， pt - rh合金網為集電極，分別組成氫濃差電池、氧濃差電池及氫?空氣燃料電池並測定了它們的性能，研究了不同氣氛下樣品的離子導電特性及影響燃料電池性能的因素。
  3. Tolerance to and effects of the freezing stress in a desiccation - tolerant, terrestrial cyanobacterium, nostoc commune, and in a desiccation - sensitive species, synechocystis sp. pcc6803, were studied by measuring their photosynthetic activities and fluorescence emission spectra

    通過檢測光合成活性和熒光發射光譜等研究冰結脅迫對藍藻地衣（ nostoccommune ）和單細胞集胞藻（ synechocystissp . pcc6803 ）的影響。
  4. With its images of body parts and anti - cartesian figurative projections, this film ranks as one of three surrealist masterpieces next to un chien andalou and l age d or

    集夢幻、想像、詩化和慾望，片中對身體器官和超理性的像化投射，使它與三十年代的《安德魯之犬》及《黃金時代》合稱超現實電影之三絕。
  5. Bez developing rapidly will grow into the production and export base of beijing high new technology products, the radiant source of diffusing high new technologies to traditional industries and enterprises outside bez, the collection and distribution base of high new technology products which will exert it influence in the world, the window of the reforming and opening to the outside world of china, and the testing field of restructuring market economy systems

    該基地是一個以電子信息產業為主導，集科研開發生產經營培訓和服務為一體的綜合性基地。迅速發展的北京市新技術開發試驗區，將成為北京市高新技術產品生產和出口創匯的基地向傳統產業和區外產業擴散的輻射中心在國際上具有影響的高新技術產品集散地中國改革開放的窗口市場經濟體制改革的試驗田。
  6. The eleventh design research institute of it co., ltd edri for short is a general class a design institute which major business is engineering design, engineering consultation, construction supervision and lump - sum contract project, and also extend its business to the product development, production, installation and service of serial air - condition. edri is a holding company of china information industry corporation which holds class a design licenses of electronic project of electronic communication broadcast television industry, construction project of construction industry, pharmaceutical project of chemical industry and petrochemical industry, public facility environmental sanitary, military industry optics, photoelectric and electronic project and class a business licenses of property estimate consultation lump - sum project, project supervision, environmental estimate, class a design license of electronic communication broadcast television industry communication project wireless communication, communication tower, broadcast television project, chemical petrochemical pharmaceutical industry, agricultural forestry industry stockbreeding vaccine product factory, and machine, light textile textile, electronic appliances and machine, public facility water supply, drainage, scenery garden

    Edri以工程設計咨詢監理總承包為主業，兼營凈化空調系列產品開發生產安裝和服務的綜合性甲級設計院，是中國信息產業集團公司的控股企業，擁有國家頒發的電子通信廣電行業電子工程類建築行業建築工程化工石化醫藥行業軍工行業光學光電電子工程甲級設計證書和工程造價咨詢工程總承包工程監理環境影響評價甲級證書以及電子通信廣電行業通信工程類無線通信通信鐵塔廣電類廣播電視發射產品項目農林行業畜牧工程疫苗製品廠機械行業輕紡行業紡織家用電器及日用機械市政公用行業給水排水風景園林乙級設計證書。
  7. It is based on the principle : under a number of angles, the x - ray attenuation in a cross section of a human body is measured by detector resulting in a set of profiles. this set of profiles is called the radon transform of the object in mathematics. the problem now is to reconstruct a two - dimensional image via inverting its radon transform

    它所基於的成像原理是：人體的某個剖面在若干個角度上被x射線束照射，照射后x射線的衰減量被檢測器記錄下來，形成投影集合，數學上將這個投影集合描述為該剖面的radon變換，通過反演radon變換就能夠重建剖面的二維圖像。
  8. Computerized tomography ( ct ) is a typical non - invasive examination techniques in medicine, which can depict anatomical structures without damaging the human body. lt is based on the principle : under a number of angles, the x - ray attenuation in a cross section of a human body is measured by detector resulting in a set of profiles. this set of profiles is called the radon transfoim of the object in mathematics. the problem now is to reconstruct a two - dimensional image via inverting its radon transform

    它所基於的成像原理是：人體的某個剖面在若干個角度上被x射線束照射，照射后x射線的衰減量被檢測器記錄下來，形成投影集合，數學上將這個投影集合描述為該剖面的radon變換，通過反演radon變換就能夠重建剖面的二維圖像。
  9. In this paper, fluorocarbon films are deposited on polyetylene terephalate ( pet ) substrate by radio frequency magnetron sputtering polytetrefluoroethylene ( ptfe ) targets to examine the effect of discharge condition on the properties and mechanism of deposited films. the effect of the power, pressure and treating time on morphology is observed by means of scanning electron microscopy ( sem ) and atom force microscopy ( afm ). it is found that the fluorocarbon film particles distribute more uniform and join tightly with increasing power, the surfaces of films become closer and denser as pressure increases

    利用掃描電鏡（ sem ）和原子力顯微鏡（ afm ）研究了成膜機理以及cf膜的表面形貌，觀察了不同功率、壓力和時間下對氟碳膜表面形貌的影響，系統研究了氟碳膜表面結構隨功率和壓力的變化規律，發現功率提高使得氟碳膜顆粒分佈均勻，結合更加緊密，而提高壓力，氟碳膜的顆粒更加密集，並且濺射條件不同，粒子的形態、粒子間構成的介觀結構也不相同。
  10. In two - view case, a method is presented for calculation 2d projective transformation and construction the virtual elements by combination of spatial points and lines. so more 3d invariants of object ' s spatial structures can be extracted from real elements and virtual eleme nts. ( 3 ) the geometric characteristics of 2d symmetric objects " in perspective images are lucubrated

    （ 2 ）擴展了2d射影變換矩陣的求解方法，將單純利用點集對應的計算模式擴展到利用直線集、點線組合等多種類型來建立兩個射影平面的對應關系；總結了平面上基於點、直線元素可求解的多種3d不變量；提出了雙視圖下由點、直線元素的多種對應關系求解2d射影變換來構造「虛元素」的方法，結合「實元素」和「虛元素」可以提取更多的空間3d不變量。
  11. In this paper, we ore going to analyze the effect factors of collector from the aspects of radiation condition, in - phase of supply and demand and sensitivity of shelter and variation of combinatorial plane, then discuss them with some design examples

    該文擬從輻射條件、供需同步性及對遮擋及組合面變化的敏感性方面對影響集光器姿態的因素進行分析，並結合設計實例進行探討。
  12. The fitness of four negative electrode materials such as al, fe, zn, cd, and of six membranes materials : microfiber glass mat separator, polyethylene, polypropylene, polyvinyl chloride, vinylon, soapnated cellulose acetate, and of four current collects : carbon fiber ; nickel foam ; nickel foam sthongthened by iron wire net, punched silver grid in the super - iron alkaline batteries was comparatively studied. the influence of two storaged method ( with and without electrolyte ) and two impurities ( zno, fe ( oh ) 3 ) to the experiment cell ' s self - discharge nature was also comparatively studied. at last, the nature of discharge. structure and electrochemistry of experimental cell with k2feo4 as cathode active material prepared by three different methods : high temperature reaction, hypochlorite oxidizing and electrolysis, was comparative ly studied. we can conclude : i ) the open - circuit potential and the flat of work potential and the percent of capacity of k2feo4 till 1. 0v during the discharge at constant load of experimental cells decreased by the order of al / k2feo4, zn / k2feo4, cd / k2feo4, fe / k2feo4. as for the nature of charge - discharge cycle, cd / k2feo4 fe / k2feo4 zn / k2feo4. in water solute electrolyte, although al / k2feo4 can n ' t be used as storage battery, it have great potential as primary cell or storage cell from the aspect of its discharge capacity. discharge power

    採用組裝實驗電池、 x -射線衍射（ xrd ）和循環伏安（ cv ）的方法，從實驗電池的放電特性、充放電循環特性、自放電特性，不同高鐵酸鹽的結構特性和電化學特性幾個方面，對4種金屬負極材料（ al 、 fe 、 zn 、 cd ） 、 6種隔膜材料（復合玻璃纖維、幅射接枝聚乙烯、改性聚丙烯、聚氯乙烯、維尼綸無紡布、皂化再生纖維素） 、 4種集流體材料（泡沫鎳、以鐵網為加強層的泡沫鎳、切拉銀網、炭纖維編織網）在堿性高鐵電池中的適用性進行了比較研究；對2種雜質組分（ zno 、 fe （ oh ） _ 3 ）和2類不同貯存方式（干、濕）對實驗電池自放電特性的影響進行了比較研究；對3種方法（高溫固相反應、次氯酸鹽氧化、直流電解）所制k _ 2feo _ 4的實驗電池的放電特性、結構特性和電化學性能進行了比較研究。
  13. In this article, the author stimulates some complex sites using two - phase media motion differential equations, finite element lumped - mass method and multi - transmitting formula

    本文利用兩相介質運動微分方程和集中質量有限元法，並結合透射邊界對幾種復雜場地對地震波傳播的影響進行了模擬。
  14. In this article, a research on how the change of latitude and direction of a solar powered long endurance aircraft effect the received solar power was developed. and on the basis of the car air conditioning, the thermal properties of the single - effect lithium bromide absorption hot - coldwater unit and two - stage lithium bromide absorption hot - coldwater unit applied in car and driven by high temperature cooling fluid of the car engine are advanced and compared. the technique of energetic optimization is employed to investigate the optimal performance of an irreversible hybrid air - conditioning system consisting of a vapor compression refrigerator cascaded with a solar - driver absorption refrigerator

    本文對太陽能飛機的飛行緯度和飛行方向對能夠獲得的太陽能輻射量的影響進行了研究，以及對應用於汽車空調的兩種溴化鋰製冷機組，即單效溴化鋰製冷機組和兩級溴化鋰製冷機組進行了熱力分析和研究，同時，結合太陽能集熱器作為整個製冷系統的熱源，對系統的最優綜合性能進行了分析和研究。
  15. The length should be added if the cost is n ' t increased and the installation is convenient, the diameter should be chose by the local weather condition and the using requirement ; the gas pressure should be not higher than 5 x 10 - 2pa and the emissivity should be less than 0. 1, the spring should be small and narrow in order to decrease the heat loss, the gas absorbed getter should not be too many as long as it can absorb the residual gas and keep the vacuum degree

    在不影響安裝和增加成本的情況下，應適當增加太陽能真空集熱管的長度;根據當地的氣候條件和使用要求來綜合考慮選擇直徑;國標規定的真空度必須達到5x10 』 zpa ，發射率小於0 . 1是合理的;彈簧卡子不要選用很寬、很大的尺寸，盡量減少接觸熱損;吸氣劑並非越多越好，只要能夠吸收殘余氣體，保證一定的真空度即可。
  16. Secondly, proportional arc length method is used to conformal mapping process of asymmetry sections so as to solute the 2d radiation problem with the method of multipole expansion. on the basis of above, 3d hydrodynamic coefficients are given and motions of the container ship flokstra are predicted considering the initial heel

    然後，採用比例弧法對全剖面進行保角變換並在此基礎上用多極展開法計算非對稱剖面的輻射流場，進而採用切片理論合成全船的水動力系數並對flokstra集裝箱船進行了考慮橫傾影響的運動響應預報。
  17. In this paper, according to the character of the ship power system and device and the factors that affect it ' s capability, such as environment, utilizing the experience of the field expert, and combined with the practice of ship manufacturing and maintenance, the application of various oil monitoring technology, namely oil quality testing, spectrometric oil analysis, ferrography analysis, and particle counting etc, is studied respectively, and the fault recognition pattern is constructed. on the basis of this, according to dempster - shafter evidence theory, the information infusion mode is constructed and the oil monitoring multi - technology system is integrated. at last, colligating the result of the information infusion system and other information of the device, such as primitive data, maintenance records, running condition etc, the oil monitoring system to ship power system & device is realized

    本文根據船舶動力裝置與設備自身的特性以及外部環境等影響因素，利用領域專家經驗和相關的知識，結合船舶修造和營運實際，對常規理化性能檢驗、油料發射光譜分析、鐵譜分析以及顆粒計數等油液檢測技術在船舶中的應用進行了分別研究，並建立了狀態識別模式；在此基礎上，利用d ? s證據組合理論，建立信息融合模型，集成了油液監控多技術系統；最後，綜合多技術信息融合系統的建議，以及設備的原始數據、維修記錄、運行狀態等信息，實現了船舶動力裝置與設備油液監控系統。
  18. In order to investigate the role of mannose receptor ( mr ) of human sperm, the zona free hamster eggs were pre - incubated with purified mr ( pmr ) isolated from motile human sperm by mannose - agarose gel affinity chromatography. the ultrastuctural alteration and cortical granule exocytosis of the eggs were then observed by transmissian electron microscope and tritc - lca immunofluorescence microscope, respectively. the mice were immunized with pmr and the antiserum was raised. after capacitation and induction of the acrosome reaction, the human spermatozoa and oocytes were incubated with the antiserum. then the sperm penetration assay was undertaken

    為了進一步探討人精於mr在精卵融合中的作用，本文採用改良后的甘露糖-瓊脂糖凝膠親和層析法分離純化人精子mr ，並將提純的人精子甘露糖受體（ purifiedmannosereceptor ， pmr ）作用於去透明帶的金黃地鼠卵母細胞，運用透射電子顯微鏡技術和羅丹明偶聯的兵豆凝集素（ tritc - lca ）免疫熒光標記技術觀察pmr對卵子的影響。
  19. Mms - based instruments are ideal for measuring weak, scattering and diffuse sources and samples because the spectrometer can collect and process far more light through its wide area aperture, without affecting spectral resolution

    基於mms技術的設備非常適合測量測量難以測量的、散射的發散源以及樣品，因為通過一個大口徑編碼光闌，這種光譜儀就能夠集聚並處理更多的光線，而不會影響光譜解析度。
  20. Date integration technique was used to analyze the relationship between monthly mean daily clearness index kt and s, the ration of monthly mean daily sunshine duration to possible sunshine duration as well as that of monthly mean daily direct transmittance kb. based on data from 1957 to 2000, a series of kt and kb estimation models with different temporal and spatial scales were established. furthermore, the distributions of kt and kb from january to december in chongqing were mapped by kriging interpolation for long - term mean

    大氣輻射過程模擬通過晴空指數、直接透射率等綜合描述大氣對太陽輻射影響的參數，採用重慶市及其周邊地區1957 - 2000年日射站觀測的月輻射資料和常規月氣象觀測資料，利用數據集群技術，建立了不同時空尺度的太陽輻射估算模式；使用kriging插值法，完成了重慶市氣候平均狀況下各月晴空指數、直接透射率的空間制圖。
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