能量譜密度 的英文怎麼說

中文拼音 [néngliángpǔmìdù]
能量譜密度 英文
esd，energy spectrum density
  • 能 : 能名詞（姓氏） a surname
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 譜 : Ⅰ名詞[書面語]1 （按類別或系統編成的書或冊子等） table; chart; register 2 （指導練習的格式或圖形）...
  • 密 : Ⅰ名詞1 （秘密） secret 2 [紡織] （密度） density 3 （姓氏） a surname Ⅱ形容詞1 （距離近; 空隙小）...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 能量 : 1 [物理學] energy; amount of energy 2 （能力） capabilities; capacity; 能量不滅 conservation of e...
  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. Radiation spectrums of relativistic charged particles in a dipolar magnetic field were studied numerically in detail by using the current density of moving charged particles in this paper

    摘要從運動的荷電粒子產生的流密度出發，研究了在地球偶極磁場中運動的相對論性荷電粒子的輻射能量譜，並對其進行數值計算。
  3. Under the applied voltage of 2v, the duration of colored process and bleaching process of the semisolid - state smart window was 2s and 1. 5s respectively, which denoted rapid response velocities. researches on the glass / ito / wo3 / linbo3 / niox / au all solid - state smart window were referred to the effect of each film ' s thickness on the device ' s electrochromic properties. through the test of the visible light transmittance of the colored state and bleaching state of the device, it proved good electrochromic capabilities with the dynamic optical density changed between 0. 2 - 0. 5

    並在此基礎上繼續研究了glass ito wo _ 3 linbo _ 3 nio _ x au結構的全固態智能窗器件模型，對于各薄膜層厚度對于器件電致變色性能的影響做了初步的研究，測試了器件可見光范圍內的著色褪色透射光譜，光密度變化量在0 . 2 0 . 5范圍內，表明器件具有良好的電致變色性能。
  4. In order to avoid spectrum error due to energy leakage, the thesis research on identification of parameters of two close frequency components in discrete spectrum analysis, and simulation result shows the validity of the method

    針對由於能量泄漏造成的頻譜誤差，深入研究了密集頻譜的頻域參數識別法，從理論上加以推導，並通過模擬證明了該方法的有效性，可以識別1個頻率解析度以內的兩臨近頻率分量。
  5. The entropy or number of states of system or subsystem are closely related to interaction of particles and energy level distribution, therefore, to study the temperature dependence of the specific heat may supply some important and useful microscopic information which may play an important role in understanding electronic structure, density of state, phonon spectrum etc. the specific heat measurements at low temperatures also play important roles in the finding of the third law of thermodynamics, the quantum theory of solid and bcs theory for superconducting etc. moreover, specific heat measurements help us to understand the different kinds of phase transitions ( such as : structural phase transition, magnetic phase transition, superconducting phase transition etc. ) and the scaling behavior near the critical point

    系統、子系統的熵或微觀狀態數與微觀粒子間的相互作用及能級分佈密切相關，因此研究比熱與溫度的依賴關系能夠提供被測量系統許多極其有用的微觀信息，對理解固體的電子結構、電子態密度、聲子譜等起著十分重要的作用。低溫比熱的測量和研究對熱力學第三定律、固體量子理論和超導bcs等理論的建立起到了積極的推動作用。比熱研究還有助於認識各類相變如結構相變，磁性相變，超導相變等及臨界點附近的標度規律。
  6. Due to the fact that the problem of reconstructing image from compton scattering energy spectral data is an ill - posed problem, any error or noise in the measurements will be amplified in the reconstruction results

    由於從康普頓散射能譜直接求逆重建密度圖像是一個不適定性問題，測量的微小誤差會在重建結果中被放大。
  7. In this experiment, a neodymium glass laser is used to study the effects of the operating voltage, power density, the height from the observed location of the plasma to the surface of the sample, the location of the sample, the gas composition and the pressure on the intensity and quality of the spectrum

    本文採用高能量釹玻璃激光器，研究了激光器工作電壓、功率密度、等離子體的觀測高度、樣品位置、環境氣體及氣壓對等離子體的譜線強度及譜線質量的影響，獲得了最佳的實驗條件，並測量了金屬分析樣品中某些元素的含量。
  8. Expanding the system ' s hamiltonian to a real symmetric matrix in an appropriate orthogonal basis vector and then diagonalizing it, we get the energy spectrum of the system and calculate the energy level spacing distribution function and the spectral rigidity. then we study the statistical character of the energy spectrum under the changing of magnetic field intension and find that the system ' s motion transfers from regular to chaos gradually

    將系統的哈密頓量在一個適當的正交基矢下展開並對角化，得到系統的能譜，分別計算系統能譜的能級間距分佈函數和譜剛度，研究了該系統量子能譜的統計特徵隨磁感應強度大小的改變而表現出的系統運動由規則到混沌的漸進變化。
  9. To find the parameters of preparation and annealing process associated with the best electrochromic properties of these films, following researches and experiments were carried out : to compare the visible light transmittance of the colored state with bleaching state of the electrochromic films which were annealed at different temperatures and for different duration, to count the dynamic optical density change, and to test the i - v relations of these films " electrochromic cycles and their colored / bleaching response time

    對經過不同熱處理溫度和不同熱處理持續時間得到的薄膜樣品的著色褪色可見光范圍內透射光譜的比較，計算薄膜動態光密度變化量的大小，測試薄膜著色褪色循環伏-安關系以及薄膜著色褪色響應時間的快慢，尋求到薄膜呈現最佳電致變色性能時所對應的制備參數與熱處理參數。
  10. In this project we use etching method x - ray transmission and tem observe and study the form mechanism of cell structure and linear structure ; use sem observe cell structure directly and evaluate effect to the electrical properties of substrate ; at last, use high resolution tem and eds to observe and identify the nature of microdefects

    發現幾乎所有高位錯密度的si - gaas單晶的表層都具有網路狀胞狀結構或系屬結構，首次對該胞狀結構和系屬結構的形成機制進行了研究；直接觀察微缺陷，配合eds （能量色散譜）鑒定si - gaas中微缺陷的物理本質，同時分析其產生原因，討論與位錯的相互作用。
  11. How improving the capability of ict has become more and more an important task, for example, improving spatial resolution and density resolution, reducing scan time, enlarging the size of measure space, improving image quality, etc. moreover the question of the energy spectrum hardening and the photon scattering is one of important bottleneck to restrict the improvement of ict

    如何提高工業ct的性能指標，如怎樣進一步提高空間解析度、密度解析度，減少掃描時間，增大可測工件尺寸，改善圖像質量等等成為了ct界面臨的重要任務。而其中射線的能譜硬化和散射問題，又是制約工業ct各項性能指標提高的重要瓶頸之一。
  12. Abstract : by using the pulse - sequence model ， the inverse problem of amplification of broad - spectral - bandwidth laser pulse has been studied ， i. e. ， to find the initial input temporal pulse profile ， spatial profile ， spectral distribution and fluence from the required output temporal ， spatial pulse profile ， spectral distribution and fluence as well as the given amplifier parameters

    文摘:採用脈沖分割模型，研究了寬頻帶激光脈沖放大的逆問題，即由所要求的輸出激光脈沖時間、空間波形、光譜分佈和能量密度，並給定放大器參數情況下，求輸入激光脈沖時間波形、空間、光譜分佈。
  13. Then we introduce pulse position modulation ( ppm ) using pn code and analysis its multi - access performance, system capacity and power spectrum density. on the basis of those analyses, we study the pulse shape and the anti - jamming ability of the system. at last, multiple access with pseudochaotic time hopping is introduce

    本文首先闡述了uwb脈沖通信系統的基本原理，重點介紹了用偽隨機碼跳時的ppm （脈沖位置調制）調制，分析了他的多址性能、系統容量和功率譜密度，在此基礎上研究了改進性能的發射信號形狀和系統抗干擾能力，最後介紹了偽混沌碼跳時的多址方式。
  14. Cid - icp - aes has the advantages of high sensitivity, high signal - to - noise and high quantum efficiency, which nearly reaches theoretical limit value of theoretical parts of an apparatus ; it can memorize thousands of spectra lines at the same time. cid - icp - aes is the newest model, and there are still few articles to report analytical character of this type, as this result the optimum of operating condition and the effect of analytical parameters for photometric precision, signal - to - noise and detection limits are studied : r. f. power is 11 sow, nebulizer pressure is 28psi, the measurement time is 3 times and the integral time is 20s

    本實驗室的光譜儀是當前最新型號的全譜直讀光譜儀，這類新型裝置分析性能的研究報道較少，因此研究著重分析了參數對測量精密度、線背比及檢出限的影響，對儀器最佳操作條件進行了摘要優化：發射功率採用1150w ；載氣壓力為28psi ，測量次數選擇3次，積分時間為205 。
  15. We are used to gain the detection efficiency by making the standard samples, because of the different source of the environment samples, the component and density and volume of the samples ca n ' t entirely match those of the standard samples, so it is very difficult to make the standard samples, thereby, in order to conquered experiment difficulty, this article has calculated the detection efficiency of hpge - spectrometer by existing monte carlo code

    但由於待測環境樣品的來源不同，其介質成份、密度和體積量可能相差很大，實驗上又難以製作各種各樣的標準樣品，採用蒙特卡羅方法可以比較容易地解決這些問題，對此，我們採用蒙特卡羅方法，研究了高純鍺譜儀對不同環境樣品的探測效率，解決了實驗上製作各種標準樣品的難題。
  16. In the radioactivity measure of the environment samples, hpge - spectrometer can expediently analyze the species and content of the radionuclide in the environment samples. those demands the detection efficiency corresponding to the different energy y - ray in the various environment samples

    在放射性測量中，採用高純鍺譜儀可以方便地分析環境樣品中放射性核素的種類和含量，但要準確地分析核素含量，需要準確知道各樣品中的各種能量射線的探測效率，通常由一定密度和樣品量的標準樣品來得到這一效率。
  17. Energy density spectrum

    能量密度譜
  18. Aiming at the common problems about the incline of biochip image, the automatic image rotation correction is realized by analyzing the power spectrum density of image projection

    針對生物晶元掃描圖象普遍存在的傾斜問題，利用圖象投影的能量譜密度，實現對傾斜圖象的自動校正。
  19. Firstly, acoustic waves propagation in id quasi - periodic system is studied by means of the transfer matrix method. the transmission rate, reflection rate, energy flow, logarithmic energy flow, energy density and lyapunov exponent are obtained numerically. we explain all these parameters " relations with frequency and the size of system, and compare these p arameters with those o f periodic system. we find that these parameters are fractal in this quasi - period system

    通過轉移矩陣的方法，數值地得到了系統的傳播系數t _ n 、反射系數r _ n ，能流密度j _ n 、能量密度e _ n 、李雅譜諾大指數_ n ，給出了以上各量與系統大小n以及頻率之間的關系，發現這些量存在著與周期系統不同的準周期性質，其能量會出現局域化現象，能流以及能量密度都具有分形結構，給出了相應的理論解釋。
  20. The experimental results showed that firstly, the distribution of resistiveity, mobility, carrier concentration, epd and ab - epd in gaas substrate was not uniform ; secondly, the distribution of electrical parameters depended on that of epd and ab - epd ; thirdly, mesfet devices performance correlated with ab microdefects ; last, as shown by pl mapping results, it is substrate with better parameters quality that could provide more chance to fabricate good mesfet devices

    實驗結果表明， lecsi - gaas的電阻率、遷移率、載流子濃度、位錯密度和ab微缺陷分佈都不是均勻的，且電參數的分佈與ab - epd 、位錯密度分佈有關。製作的mesfet器件的性能參數分佈與ab微缺陷有明顯聯系。從plmapping測量結果可以看出材料的襯底參數好，則pl譜的強度高， pl譜均勻性也好，器件參數也好，就有可能製作出良好的器件與電路。
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