比影光度計 的英文怎麼說

中文拼音 [bǐyǐngguāngdùjì]
比影光度計 英文
rumford's photometer
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 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...
  • 光 : Ⅰ名詞1 （照耀在物體上、使人能看見物體的一種物質） light; ray 2 （景物） scenery 3 （光彩; 榮譽） ...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 計 : Ⅰ動詞1 （計算） count; compute; calculate; number 2 （設想; 打算） plan; plot Ⅱ名詞1 （測量或計算...
  1. ( 2 ) on - line spectral response measurement is used to make a research on the activation process. the on - line measurement results have been analyzed and the influence excised by cs, o activation on the photoemission property of gaas wafers has been revealed. the properties of domestic and foreign nea phocathodes are compared, and the reasons causing the gap between domestic and foreign phocathodes are discussed

    （ 2 ）利用光譜響應在線測試技術研究nea光電陰極的激活工藝，通過對在線測試的光譜響應曲線進行分析、比較和計算，剖析了激活工藝給陰極光電發射性能帶來的影響，並從性能評估的角度，比較了國內外nea光電陰極的性能，分析了它們之間存在差距的原因。
  2. Statistics of wave crests with different directional spreading parameters and different directional functions are obtained and discussed. jonswap spectrum and the directional function suggested by mitsuyasu, donelan and wen respectively are employed in the analyses. statistical distribution of wave crest characteristics such as crest length, crest height, and directional angles based on the above - mensioned numerical simulation of 3 - d random waves are analyzed

    以jonswap譜為頻譜，選取光易型方向函數（含三個參數） 、 donelan方向函數以及文氏方向函數等不同的方向函數進行模擬，對得到的波峰形式進行比較，分析了方向函數對波峰長度統計值的影響。
  3. At first we improve the methods of iris image preprocessing, including an efficient arithmetic of evaluation iris images, an improving method of locating iris, calibrating iris image by the translation of coordinate and the circular shift of code, a eatimate of the background illumination by bicubic spline, and the image enhancement by the dual tree complex wavelet transform. next we designed the recognition arithmetic based on the location of the local maxima of the wavelet transform modulus. in the thesis lots of simulation are performed by means of matlab and visual c + +

    首先改進了虹膜預處理方法，實現了一種快速高效的虹膜質量評價演算法;設計了一種改進的兩步虹膜定位演算法，準確的定位了虹膜的內外邊界;利用坐標轉換和編碼的循環移位實現了對虹膜圖像的配準;利用雙三次樣條函數擬合虹膜圖像背景，去除了非均勻光照對虹膜識別的影響;使用二分樹復數小波方法增強了虹膜圖像的對比度;在識別演算法方面，本文設計了一種「基於小波模極值點位置的虹膜識別演算法」 。
  4. The blade inner channel cooling is a complex convection - conduction coupling problem. this thesis build a three - dimension. compressible turbulence model, and give a general solve method. with the geometrical model of the glossily rectangle straight channel, the rectangle straight channel with in - line arrays disturb plates, the rectangle straight channel with staggered arrays disturb plates, the rectangle straight channel with slant disturb plates, this thesis compute the flow and heat transfer condition when the cold air path though these channels, and gain the temperature field, pressure field, velocity filed, in addition. this thesis also analyze the influence of the different channel height, the different channel materials, the different channels, and gain the function relation between he nusselt number, friction factor and reynolds number. this thesis is emphasis on the new heat transfer enhancement structure, that is, disturb plates, with the comparison with the glossily channel and channel with pin fins, the heat transfer enhancement effect of the former is better, and the conclusion can be used in the design of aircraft blade

    葉片內部通道冷卻是一個復雜的對流?導熱耦合傳熱問題，本文在分析葉片內部通道冷卻的流動與傳熱情況的基礎上，建立了三維、可壓縮紊流的物理模型，得到了通用的求解辦法；利用不帶擾流片的矩形直通道、帶順排擾流片矩形直通道、帶叉排擾流片、帶傾斜擾流片的矩形直通道的幾何模型，計算了冷卻空氣通過這幾種通道時的流動與換熱情況，得到了各種不同情況下計算區域的溫度場、壓力場、速度場；在此基礎上分析了不同的通道高度、不同的葉片通道材質對葉片內部通道冷卻的影響，並整理得到了各種通道形式下，努謝爾數和阻力因子與雷諾數的函數關系；本文重點研究了新型的葉片內部通道冷卻強化傳熱措施?帶擾流片的內部冷卻通道的強化傳熱效果，通過與光滑矩形直通道、帶針肋通道的冷卻效果的比較，表明了這種新型鮚構的優勢，對于葉片內部通道冷卻結構的設計可以起到指導的作用。
  5. By successful solution of non - linear magnetic fields and revision of the program, we can reach following conclusions : in the computation of nonlinear magnetic fields, if iteration method is used, under - relaxation is necessary when amending the permeability distribution in soft magnetic materials ; and when < wp = 5 > calculating the equivalent current density in permanent magnets, under - relaxation is not a necessity ; when searching for permeability values by interpolation method on the demagnetization curve of soft magnetic materials, if a fixed saturation point is set, around this point an abrupt change of permeability values will be obtained ; this sudden change may cause a little problem in the smoothness of magnetic field distribution ; because the magnetic circuits of microwave tubes are too complicated, in the author ' s view, to describe the working state of a magnet system, the working points of magnets can not do it properly but average energy production of magnets will serve ; as to indicate the quality of a magnet system design for microwave tubes, the efficiency of magnetic energy utilization will be a very good criterion

    由此得出結論，在非線性磁場計算中：採用迭代法的情況下，在各迭代循環之間進行磁導率修正時，一個欠鬆弛迭代過程是必需的；對永磁體中的等效電流修正時可以不作欠鬆弛迭代；在純鐵的磁化曲線上指定某一個固定的磁感應強度為磁飽和值，會使得插值求出的磁導率在該磁飽和值附近有一突變，這一突變對計算結果中磁場分佈變化的光滑性稍有影響。在微波管磁系統設計中，由於微波管磁路比較復雜，作者認為磁體的工作點並不能很好地反映磁體的工作狀態，而採用平均磁能積為衡量磁體工作狀態的標準更加符合微波管磁系統的實際情況；要表示磁系統設計好壞的程度，則用磁能利用的效率為標準更好。
  6. Fluorescence power transfer function, three - dimensional point spread function ( 3d - psf ) and three - dimensional optical transfer function ( sd - otf ) for the various fluorescent wavelength of the two kinds of fluorescence confocal scanning microscopy are calculated in this paper by using fourier imaging theory. the results show that the fluorescent wavelength has influence on imaging property of confocal microscopy such as spatial cut - off frequency, resolution and 3d - otf. there is a different missing - cone in the 3 - d space of otf when the ratio of excitation wavelength to fluorescent wavelength decreases

    本文在sheppard和gumin等人的理論基礎上，利用fourier光學成像理論，討論了不同熒光波長對單光子和雙光子共焦顯微鏡成像特性的影響，導出了單光子和雙光子共焦顯微鏡的熒光功率傳輸函數、三維脈沖響應函數和三維光學傳遞函數，得到了它們在不同激發波長與熒光波長比值時具體的表達式，並且通過數值計算，得到了它們的曲線圖，結果表明：隨著激發波長與熒光波長比值的增加，焦斑的橫向分佈和縱向分佈變窄，橫向解析度和縱向解析度提高，系統的成像效果變好，當激發波長與熒光波長的比值下降到一定程度時，可以看到不同程度的失錐現象。
  7. The influence arising from the anode voltage and gas pressure of gas - flow proportional counter and ambient temperature on the measuring error of the setup has been investigated by means of experiment

    實際測得了流氣正比計數管陽極高壓、工作氣壓和環境溫度對軟x射線熒光測量裝置測量誤差的影響。
  8. The main work can be summed up as follows : firstly, we studied the thermal - field properties of vcsels, and analyzed the influences of current spreading, material parameters and operating conditions on the temperature distributions. secondly, we began with the electrode voltage and calculated the equipotential s distributions, compared the distributions of voltages and current densities in different depths of vcsels, and then studied the influences of the oxide - confining region with different position or thickness, and the different sizes of the gain - guided aperture and emitting window on the distributions of the injected current density, carrier concentration and temperature in the active region. thirdly, we realized the coupling of electricity, optical and thermal - fields, worked out the threshold voltage, calculated the distributions of the injected current density, carrier concentration and temperature under different offset voltages, and analyzed the impacts of temperature profile and carrier density on the refractive index, fermi levels and optical - field

    具體工作可以概括如下：首先，研究了vcsel的熱場特性，分析了電流擴展，材料參數和工作條件對于溫度分佈的影響；其次，從電極電壓入手，計算出激光器中的等勢線分佈，並對不同深度處的電壓和電流分佈進行比較，研究了高阻區的不同位置和不同厚度、限制層和出射窗口半徑的大小對電流密度、載流子濃度和溫度分佈的影響；再次，實現了電、光、熱耦合，求出了閾值電壓，計算了不同偏置電壓下的電流密度分佈、載流子濃度分佈和熱場分佈，分析了溫度和載流子濃度變化對折射率、費米能級和光場的影響；最後，給出了考慮n - dbr和雙氧化限制層時激光器中的等勢線分佈，分析了n - dbr和雙氧化限制層對vcsel電流密度、載流子濃度、溫度和光場分佈的影響。
  9. In this paper, some investigation and design as following. have been carried out on er - yb codoped phosphate glass waveguide laser first, three primary performance parameters of er - yb waveguide laser pump threshold power ; output power and slope efficiency have been commulated and analysed theoretically based on er ~ ( 3 + ) - yb ~ ( 3 + ) energy configuration ; rate equation of stable state and transmitting equation. the influences of er - yb ions concentration ; enabled waveguide length ; light dot radius of signal light and pump light ; reflectivity of output lens on three above parameters have been researched

    首先，從er ~ （ 3 + ） - yb ~ （ 3 + ）能級結構出發，結合激光穩態速率方程與傳輸方程，對鉺鐿波導激光器的三個主要性能參數:閾值功率、輸出功率、斜率效率作了理論計算分析，並研究了鉺、鐿離子濃度、光波導激活長度、信號光與泵浦光光斑半徑比例、輸出耦合鏡反射率對這三個關鍵性能參數的影響。
  10. In the section 1, we have introduced the background and the recent advance of the flattened gaussian beam ; in the section 2, for the first time, we have calculated the type - i and type - ii shg conversion efficiency and simulated curves versus the crystal length, the pumping light polarization rate, the order of the flattened gaussian beam and the pumped power intensity, we obtain ed that the highest efficiency was influenced by the order and the polarization rate of the pumped flattened gaussian beam

    從三波耦合方程及clbo晶體的光學特性出發，討論了以平頂高斯光束入射時穩態的三波耦合方程的大信號倍頻解（包括類及類相位匹配的倍頻解） 。計算了其在clbo晶體上的倍頻轉換效率與晶體長度，基波偏振分量比，基波階數及泵浦波強度之間的相互影響關系曲線。得出影響平頂高斯光束的最高轉換效率的因素是基波的階數n和泵浦波的偏振分量比d 。
  11. Because of high threshold of 946 nm laser, severe thermal lens effect will appear when the 946 nm laser operations. in the consideration of thermal lens effect, the - optimized folding cavity has been devised. the relation between thermal lens effect and the radius of laser beam waist has been given as well

    由於946nm激光閾值很高，需要更強的泵浦功率密度，因此較大功率藍光激光器的熱透鏡效應將會比紅光和綠光激光器更明顯，而熱透鏡效應是影響激光功率提高和激光輸出穩定性的重要原因，所以在考慮到激光晶體熱透鏡效應的情況下，優化設計了折疊腔結構，並給出了熱透鏡效應和折疊腔中腔模半徑大小的關系。
  12. In this paper, i will present some algorithms of polyhedral visual hull reconstruction : ( 1 ) polyhedral v isual h ull generation a igorithm b ased one dge - pool - searching, which constrains the 3 - d intersections into the 2 - d planes intersection via the epipolar theory to reduce the complexity a nd c an r educe t he t imes f or c ones t o b e p rejected o nto t he i mage p lanes, i n which we induced the index list to every points on the surface of object, and connected the related points to get sub polygons on surface and in turn get the mesh model, we replace triangulation process of disordered points cloud by edge - pool searching. ; ( 2 ) reconstruction based on degenerated - polygon - intersection, which have the following improvements on traditional bull intersection : using degenerated polygon to orga nize intersected area on cone face, which may be discontinuous ; a fast intersection algorithm of polygons on the cone face based on degenerated polygons, which is consistent between the continuous polygons and the discontinuous ones. the intersection of degenerated polygons is similar to the convergence of two ordered lists, which is comparably simple to the bull operation ; ( 3 ) reconstruction algorithm based on ray - tracing, in which all the rays that run through the vertex on silhouette of object will intersect with all the cones correspondent to other silhouette, and we have to calculate the intersection of all such line segments, the endpoints of which are considered to lie on the surface of object and we will get the point cloud on the surface of object

    同時利用共極線原理把三維計算投影到二維平面以降低求交計算的復雜度，該演算法可以減少光錐向圖像平面投影計算的次數，以邊池搜索取代散亂點集上進行的三角剖分； （ 2 ）基於退化多邊形求交的多面體可見殼模型重構，系統引入退化多邊形的概念，把錐體平面的交集中不連通的部分用一個退化多邊形來表示，並引入了新的基於退化多邊形的求交演算法，與傳統多面體可見殼重構相比，該演算法有以下幾點創新：在圖像平面以退化多邊形組織投影錐體和物體輪廓的交集，把任意錐面與物體輪廓的交集歸一到一個退化多邊形；基於退化多邊形的二維平面上多邊形快速相交演算法，該演算法在一定程度上就是兩個有序鏈表的合併，大大簡化了先前的布爾求交計算； （ 3 ）基於光線跟蹤的演算法，該演算法中所有通過輪廓頂點的光線和對應其它圖像輪廓的光錐進行求交計算，最後得到每次求交計算得到線段的交集，該線段的頂點就認為是物體表面點，從而得到物體表面的點雲。
  13. A two stream model has been used to calculate the variation of optical depth and their effects to ultraviolet radiation of each extinction material. with the model, the relation among season, solar zenith angle and ultraviolet radiation has been discussed, and the variation of ultraviolet radiation under different clouds has also been studied. the comparative research of ultraviolet radiation among kunming, beijing and other abroad area at the same latitude has also been done

    在已建立的計算昆明紫外輻射兩流模式改進的基礎上，進一步計算並討論了： 1各種消光物質的光學厚度變化規律及其對紫外輻射的影響2季節變化及太陽天頂角變化與紫外輻射的關系3不同雲的光學厚度下紫外輻射的變化4昆明與北京兩地模式計算結果比較，以及與國外相近緯度觀測結果進行了比較。
  14. The formula to calculate the light splitting ratio of intensity compensation with light splitter is derived out. two kinds of circumstances are discussed in detail, the one is laser polarization changing while the intensity keeping stable, and the other is the intensity changing with the polarization

    用能量流分析法推導了用分光鏡分光進行強度補償的分光比計算公式，詳細討論了入射光的強度不變而偏振方向變化以及二者同時變化對分光比的影響。
  15. We hold the belief, the journal is useless unless it could help the companies and people working in this area, helping the others means helping ourselves. we are committed to function as a bridge between technical innovators and companies, we are committed to function as a bridge between talented writers and interested readers, we are committed to function as a bridge between overseas companies and chinese companies, we are committed to help the people and organizations working hard in this area

    2006年4月，期刊被中國科學技術信息研究所評為中國科技核心期刊7月18日創建了應用光學的遠程編輯系統和雜志的開放式閱讀oa下載網站，促進了科技交流，擴大了期刊影響2006年8月，收到萬方數據2006年統計報告，期刊的影響因子比上一年度翻了一番，達到0 . 32 。
  16. The signal - to - noise ratio of the nondestructive testing system employing optical heterodyne and ultrasonic techniques is analyzed and calculated from two aspects including phase matching of optical heterodyne measurement in nondestructive testing and the effects of beam incidence on the intensity of heterodyne signal and signal beam

    對光外差超聲無損探傷系統的信噪比從兩個方面入手進行了計算分析:第一，光外差測量在無損探傷中的相位匹配;第二，光束入射角對信號光光強和外差信號強度的影響。
  17. The article studies the reflection and radiation light spectrum of the object under the night sky light or with the aid of laser, calculates and analyzes the spectrum matching factor of typical optoelectronic cathode to the common objects and the effect on the light contrast and give the detailed mechanical design of the low light night observing instrument on helmet

    摘要本文研究了夜天光照射及激光助視下的景物反射輻射光譜特性，計算並分析了典型光電陰極對常見景物反射的光譜匹配系數及其對照度、對比度等參數的影響，並詳細對頭盔式微光夜視儀進行結構設計。
  18. A kind of series connection correction network is designed, which can obtain high accuracy of guidance and stability and can greatly restrain the non - linear effect caused by laser coding

    本文設計了一種串聯校正網路，可以保證比較高的制導精度和穩定性，並且可以較好地抑制激光編碼帶來的非線性的影響。
  19. O in the flow. the oh concentration was also measured using salicylic acid liquid phase scrubbing and high performance liquid chromatography hplc technique. the relationship between the calculated and measured oh concentrations was relatively uniform. the surface effect in the photolysis tube was studied using laser - induced fluorescence signal and was not of importance

    O濃度計算得到oh濃度，此計算濃度與利用水楊酸液相吸收-高效液相色譜法測得的oh濃度比較一致，同時用激光誘導熒光技術對可能存在的壁效應進行研究，結果表明在較高流速下其影響較小。
  20. ( 2 ) several samples of different structure parameters are grown by low - pressure metal - organic chemical vapor deposition ( lp - mocvd ). it is found that pl peak intensity, full width at half maximum ( fwhm ) and light output intensity are greatly dependent on number of wells. ratio of well / barrier width nearly has no effect on pl peak intensity and fwhm, but has little relation to light output intensity

    通過分析pls ，可以及時獲取材料生長和結構設計的數據，對質量控制有重要的指導意義； （ 2 ）對不同結構的gainp algainp多量子阱樣品進行了光致發光及出光強度的測量，發現mqw的周期數目n對pl峰強度、半峰寬和出光強度的影響最大；阱壘寬厚度比a對pl峰強度和半峰寬的影響較小，但對發光強度的影響較大。
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