difference spectrum 中文意思是什麼

difference spectrum 解釋
差光譜
  • difference : n. 1. 差異，差別。2. 不和，爭論。3. 【數學】差，差額。4. 【邏輯學】特殊性。vt. 〈罕用語〉區別，使有差別。
  • spectrum : n. （pl. -tra ）1. 【物理學】譜，光譜；波譜；能譜，質譜。2. 【無線電】射頻頻譜；無線電（信號）頻譜。3. 【心理學】（眼睛的）余像；殘像。4. 〈轉義〉范圍，幅度；（連續的）系列。
  1. Absorption, fluorescence emission and excitation spectra of five pigment - protein complexes were determined. photosynthetic electron transfer was measured from the dcip photoreduction. p700 concentration was assayed from the ferricyanide - oxdised minus ascorbate - reduced difference spectrum

    測定裙帶菜各色素蛋白復合物的吸收光譜、熒光發射光譜和熒光激發光譜，並進行了dcip的光還原測定和化學法的氧化還原差示光譜測定。
  2. By infrared spectrum study, the limonite ( feooh nh2o ) can be considered the main colorating mineral in the yellow and red jadeite, and the hematite is another colorating mineral in the red jadeite. the difference of color tone is due to the n value in the molecular formula feooh nh2o and the content of crystal water and adsorbent water. the iron ion came from the effloresced and eroded rocks, and formed fe ( oh ) 3 colloid reacted with the surface water

    周圍礦床的風化蝕變為表生水提供了鐵質，形成弱酸性的含fe （ oh ） _ 3膠體的水溶液，表生水流經翡翠礦石時， fe （ oh ） _ 3膠體附著在巖石的表面，經過脫水結晶和吸附，形成褐鐵礦膠體，褐鐵礦膠體沿裂隙或鬆散的礦物顆粒進入翡翠巖石中，逐漸累積沉澱，形成次生色層。
  3. 3. the principle of the interleaver based on the interference of polarized light is analyzed theoreticallyand the interleaver architecture of this kind is presented. a 50ghz interleaver is designed and the two series of interleaved spectrum like cosine function is obtained experimentally ; by using the tandem of two birefringent crystals with different optical path difference, we get the flattop spectrum

    3 、分析了pbi型interleaver濾波器的基本原理，給出了一種pbi型interleaver濾波器結構；設計了50ghz光學梳狀濾波器，實驗得到了該器件兩組交錯分波類餘弦輸出光譜；採用不同光程差的晶體級聯方案，實現了輸出光譜平頂化。
  4. This thesis tries to update the cmdsr system to achieve the characters below : real - time, better robust, higher recognition rate, non - special - man. considering the disadvantages of traditional improved spectrum subtraction speech enhancement, this thesis proposes the theory of fuzzy spectrum subtraction based on the fuzzy theory and improved spectrum subtraction speech enhancement ; as for the difficulties of detecting the endpoint of speech signal, the thesis gives the table of initial and the improved parameters, with which we can confirm the endpoints of mandarin digit speech ; the thesis puts forward two - level digit real - time speech recognition system, the first level is based on discrete hidden markov model which is linear predictive coding cepstrum ( lpcc ) and difference linear predictive coding cepstrum ( dlpcc ), the second level is based on formant parameters ; as for the realization of hardware, the thesis depicts the realization of every part of cmdsr based on the tms320vc5402 in detail ; as for the development of software, the thesis gives the software design flow chart of cmdsr, simulates the basic theory with matlab language and gives the simulation results

    針對傳統的「改進譜相減法語音增強」參數設定單一、環境適應能力差的缺點，提出了一種利用模糊理論和「改進的譜相減法」結合的「模糊譜相減法語音增強」 ;針對語音信號端點檢測困難的特點，通過matlab模擬試驗，給出了能夠準確確定數碼語音端點的初始和改進參數表;提出了利用基於線性預測編碼倒譜參數和差分線性預測編碼倒譜參數相結合的離散隱含馬爾可夫模型進行第一級識別、利用共振峰參數進行第二級識別的兩級漢語數碼語音識別系統，在保證系統實時性的同時，實現連接漢語數碼語音識別系統識別率的提高;在硬體實現上，詳細闡述了基於tms320vc5402的連接漢語數碼語音識別系統各部分硬體設計;在軟體開發上，給出了連接漢語數碼語音識別的軟體設計各部分的流程圖，並對各部分進行了matlab模擬，並給出了模擬結果。
  5. The influence of the cloud droplet spectrum character and the spectrum growth and change is considered, which does not use a cut - off value for conversion from cloud water into rain water process. in the continuous coalescence equation, the particles fall velocity difference is not moved out from the integral, but is integrated in the equation as the function of diameter d to avoid the error of using particles average fall velocity. in the new scheme, generation rate of graupel due to the collection of snow by graupel and the collection of cloud ice by graupel are included

    雲中凝結核ccn的數濃度採用超幾何函數表示；雲水向雨水的自動轉換過程採用grabowski （ 1999 ）的公式，考慮了雲滴譜的特徵和發展變化對該過程的影響，而不是採用原方案給定閾值的方法描述該過程；對連續碰並方程不再將粒子落速差作為常量提出積分號外，而是直接作為粒子直徑函數在積分號內求解，這樣處理可以迴避使用粒子群的平均落速帶來的誤差；增加了霰和雪、霰和冰晶的碰並微物理過程。
  6. The spectrum evolution of the femtosecond laser pulse in a three - level organic molecular medium ( 4, 4 ' - bis ( dimethylamino ) stilbene ) is studied theoretically by solving the maxwell - bloch equations using an iterative predictor - corrector finite - difference time - domain method

    摘要通過採用預估校正的時域有限差分法求解麥克斯韋布洛赫方程，我們研究了飛秒激光脈沖在三能級有機分子（ 4 ， 4 ' -二甲氨基二苯乙烯分子）介質中傳播時脈沖的頻譜演化情況。
  7. It is infered signal length is short, the spectrum resolving power is low by using fft method, so the vlf % and lf % by using 2 method has great difference

    推測由於5分鐘hrv信號點數較少， fft分析時解析度不高，因此兩種方法所得極低頻vlf和低頻lf有較大差異。
  8. Difference absorption spectrum

    差式吸引光譜
  9. After analysising three existed methods for phase difference correction on discrete spectrum, it is recommended to correct the spectrum containing small noise in engineer practice by the first phase difference correcting method ( performing fft analysis on two continuous original sequence ) with harming window

    綜合分析現有三種離散頻譜相位差校正方法，推薦在小噪聲工程實際中加hanning窗的第一種相位差法（采連續兩段信號作相同點數fft的相位差校正法）進行校正。
  10. Study shows that the basic principles of three existed methods for phase difference correction on discrete spectrum are identical, by which the twice fft analysis through time - domain shifting time series or changing window ' s length is performed, and the spectrum by making use of the phase difference of two corresponding peak lines are finally corrected

    在研究時域平移的離散頻譜相位差校正方法和改變窗長離散頻譜相位差校正方法的基礎上，發現這幾種離散頻譜相位差校正法的基本原理是一致的，就是通過時移和加不同的對稱窗進行兩次fft分析，並利用離散頻譜對應峰值譜線的相位差以求得頻率和相位校正量。
  11. In chapter 3, the three 1, 1 ' - dicarbonylferrocene compounds " properties are systennically characterized by ir, uv, 1hnmr, tg, esr, xps and the infrared difference spectrum before and after irradiation 1, 1 ' - diformacyl - ferrocenebiphenyldiamine and 1, 1 ' - diformacylferrocene - o - phenylenedamine polycondensates " chemical and physical properties are characterized by elemental analysis, ir, 1hnmr, tg - dta, gpc and xps

    同時，對合成的1 ， 1 』 -二甲酰二茂鐵聯苯二胺縮聚物和1 ， 1 』 -二甲酰二茂鐵鄰苯二胺縮聚物用元素分析、 ir 、 ~ 1hnmr 、 tg - dta 、 gpc及xps對其化學與物理性能進行分析。
  12. The substrate spectrum of ugts has obvious difference between species and individual

    （ 2 ） uots同工酶詣存在明顯的種同差異和個體差異
  13. Also, in our software, we have made the practical seismic data processing by the prediction of fractured amizuth and the fractured density, then evaluated the exactitude of the predictions by the evaluation of the assessment parauceter, and at last confirm one optimum detection methods of fractured amizuth, the wavelet difference scale filter method, and two the optimmer fractured density detection method, the wavelet amplititude singular exponential method and the wavelet power spectrum singular exponeatial method

    並用自編軟體，將三種裂縫方位預測和三種裂縫密度預測用於實際地震資料處理，並用評價參數檢驗評估其正確性，最終在現有的方法中確定了最優裂縫方位檢測方法?小波變尺度濾波法和最優裂縫密度檢測法?小波振幅奇異性指數法和小波功率譜奇異性指數法。
  14. By making use of the characteristics of pseudorandom spread spectrum sequence in time - domain, this thesis has studied the time - domain correlation detection method of the dsss / bpsk signal and proposed the time - domain difference - accumulation detection method of the dsss / bpsk signal

    利用擴頻偽隨機序列在時域上的特點，本文研究了dsss / bpsk信號的時域相關檢測方法，並提出了dsss / bpsk信號的時域累差檢測方法。
  15. Based on the difference of measuring errors between spectrum and a single pulse, the article introduces a procedure which can improve the specification of non - linearity of commercial adc for spectrum measurement without channel - width - everaging circuit

    摘要根據放射性能譜測量的誤差並不等於對單個脈沖測量的誤差的特點，提出一種先測出模數變換器的道寬，然後利用軟體方法進行道寬均勻的技術。
  16. On the other hand, the calculation on difference earthquake wave show : the spectrum of earthquake wave will affect dynamic property of structure like long period of xiao wan dam

    另外，不同性質的地震動輸入所得的計算結果表明，地震波的頻譜特性對于小灣大壩這樣的長周期結構的動力反應特別是位移反應有明顯的影響。
  17. Principles of optimal bands selection are that spectrum characteristics have difference to the biggest among land types except information quantity of selected band is so big and correlation between bands is so little

    最佳波段選取原則除主要考慮波段的信息量要大，而它們之間的相關性要小這兩個因素外，還要使波段組合后地物之間的光譜特徵差異達到最大。
  18. First of all, the algorithm base on the boundary problem of helmholtz equation and finite - difference technique, calculate the field in “ cold ” cavity and disperse the helmholtz equation, as a result of the formula : ax = x. secondly, according to the eigenvalue of matrix theory and applied iterative methods, eigenmode adopt a numerical approach which allows the improved chebyshev polynomial iteration which based on the power method to extract the isolated eigenmode in the spectrum. finally, we resolve the problem of compatibility in software and insert the eigenmode module into the chipic which will have the function of eigenmode analysis

    具體的說: （ 1 ）首先以電磁理論中的亥姆霍茲方程的邊值問題理論和計算電磁學中的有限差分法為基礎，計算冷腔中的場分佈並離散亥姆霍茲方程，得到標準的本徵值問題: ax = x ; （ 2 ）然後根據矩陣理論中的eigenvalue問題和數值計算中的迭代方法，採用改進后的chebyshev多項式，在power迭代法的基礎上對ax = x進行多項式迭代，實現對頻譜中孤立本徵模的萃取; （ 3 ）最後將用fortran語言編制的eigenmode模塊加入到chipic軟體中，解決了eigenmode模塊與chipic主代碼的兼容問題，從而實現了chipic軟體的模式分析功能。
  19. Using corn straw and soybean straw, the characteristics of the decaying process and the remainders, the difference of soil fertility status and soil humic acids character in different using ways are studied by normal analysis combined with energy analysis, thermal analysis ( dta, tg, dig ) and infrared spectrum analysis ( ftir )

    本文以玉米秸和大豆秸為腐解材料，通過常規分析方法結合能態分析、熱分析（ dta 、 tg 、 dtg ）和紅外光譜（ ftir ）分析研究了荒漠綠洲生態系統下殘體的腐解特徵以及不同利用方式下土壤養分和土壤腐殖質的變化。
  20. The temperature induction expression of the recombinant e. coli. was carried out and vhb protein of 16k - d was expressed. 3 we demonstrated the vhb owns biological activity by co difference spectrum

    ） 2構建了含有vgbm基因的原核表達載體pbv221svhb並轉化大腸桿菌菌株bl21 ，經熱激誘導，在培養物中檢測到了約16kd具有生物活性的vhb蛋白。
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