spectrum peak 中文意思是什麼
spectrum peak
解釋
光譜峰-
2 we studied the films with raman polarization spectrum. the peak intensity in the polarization spectrum of the films with basal plane not oriented on the substrate changes with the polarization condition
張生僅北京工業大學博士學位論文摘要2利用raman偏振光譜研究了薄膜的性質，對基面非平行襯底的取向， raman譜隨偏振條件的不同而變化。 -
Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground
針對存在的缺點，本文提出了一種應用於激光多普勒測速的高精度信號處理技術，即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜，搜索其譜峰值頻率，接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析，再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析，從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來，充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率，通過goertzel演算法獲得分析頻帶的高解析度頻譜，然後通過能量重心校正演算法對細化后的頻譜進行高精度校正，這樣不僅保證了演算法的高效性，而且大大提高了分析的精度。 -
( 3 ) the dissertation designs the hardware diagrams of corelation matrix module and spectrum peak finding module. accroding to the hardware diagrams, the dissertation codes by vhdl and do function simulation and timing simulation
（ 4 ）本文對music演算法的各模塊進行了互連調試工作。當採用了altera公司cyclone系列的fpga實現music演算法時，單次運算時間在20us以內。 -
The spectrum level of microseismic noise tends to peak at about 1/6 hz.
微震的噪聲譜在16赫趨于峰值。 -
The absorption characteristics was that the surface plasma absorption peak appeared around 570 nm shifted to a short wavelength and strengthened as the cu composition increased. but the maximal shift range of the absorption - edge preponderated over 500 nm, and leaded that the dipolar plasma resonance absorption peak were covered up and gradually disappeared in the absorption spectrum. we theoretically explained the mechanism of the modulating action
實驗觀察到cu表面等離子體共振吸收峰位在570lun附近的吸收邊頻移量超過了500nln .理論分析表明，吸收峰位的移動主要源於偶極共振，而峰形的寬化主要由納米粒子的表面效應和量子尺寸效應引起 -
The effect of ni + ion on luminescence had not been detected by fluorescence experiments for implanted doped crystals. 5 ) the xe ion peak concentration lies at a depth of about 47nm under the surface. after ion implantations, the two peaks in o1s spectrum merge into a single one
（ 5 ）注入的xe ~ +在距表面47nm處濃度取得最大值，離子注入使兩種類型氧格點的化學環境變得相似， o _ （ 1s ）譜的兩個峰融合為一個峰。 -
The reason to cause this phenomenon is due to the change of electric field in the blue oled to induce the probality of the carrier shifted and the hole - electron recombination zone changed, which was a possible alternative to achieve color display. 3 ) device with the structure of ito / npb / adn : balq3 / alq3 / mg : ag was fabricated. when the balq3 dopant concentration was about 25 mol %, a high performance devcie with luminous efficiency of 1. 0 lm / w, the peak of emission spectrum at 440 nm, the cie coordinate at ( 0. 18, 0. 15 ), and half lifetime of unencapsulated device about 950 hrs was achieved
導致本現象的原因是由於各有機層電場強度的變化影響了空穴和電子的隧穿幾率，從而導致載流子的復合區域發生改變而發出不同顏色的光; 3 ）制備了結構為ito / npb / adn : balq3 / alq3 / mg : ag的藍光oled ，空穴阻擋材料balq3的摻入顯著影響了oled的光電性能，當balq3的摻雜濃度為25mol %時， oled的發光效率為1 . 0lm / w ，發光光譜的峰值為440nm ，色純度為（ 0 . 18 ， 0 . 15 ） ，未封裝器件的半衰期達到了950小時; 4 ）在藍光材料adn中摻雜npb 、 balq3和tbp三種材料時，不僅改善了器件的發光亮度和色純度，而且提高了器件的發光效率和壽命。 -
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。 -
One theory and arithmetic " dual filter scan " of seeking peak in spectral analysis is brought forward and used for demarcate of spectrum and other analysis
提出光譜分析尋峰的一種原理和實現的演算法「兩層掃描篩法」 ，用於光譜的標定和其它分析。 -
It ' s a more accurate method in determining the isotopic abundance of uranium. the paper describes the measurement principles that allow accurate measurements to be taken on samples of arbitrary size, shape, and measurement geometry - and of arbitrary physical and chemical composition - through the use of know nuclear decay data ( half - lives and branching intensities ). this method relies on internal gamma - ray peaks from the spectrum under analysis to self - calibrate the unknown spectrum for energy and peak shape
本工作首次分析了pc fram軟體的演算法並使用高純鍺探測器探測歐共體低濃鈾標準樣品，使用pc fram軟體的預設參數並不能得到準確的富集度值，通過大量的實驗，本工作對鈾富集度測量中的關鍵問題進行了初步的研究並給出了本實驗室條件下準確分析鈾富集度的修正參數和條件。 -
The equivalent - circuit parameters and resonant frequencies of the piezoelectric quartz crystal resonance, the value of half peak width of the electroacoustic conductance spectrum ( fg1 / 2 ) as well as the electrical double - layer capacitance were obtained and analyzed
獲得並分析了pqc諧振等效電路參數、諧振頻率、電導譜半峰寬f _ （ g1 2 ）和雙電層電容，考察了電極界面發生的吸附動力學過程。 -
According to the need of design code for anti - seismic of engineering constructure, the bedrock peak acceleration rate and response spectrum of exceeding probability of 63 %, 10 % and 2 % are given respectively and seismic motion parameters are also calculated, which will provide the evidences for anti - seismic design of this electric power equipment station
按工程建築物抗震設計規范要求，分別給出了50年63 % 、 10 %和2 %超越概率水平的基巖峰值加速度及反應譜，計算出地震動參數，為該電力設備站建設提供了抗震設計依據。 -
The photoluminescence spectra were found to have the peak at 360nm and 675nm. we discuss the exciting spectrum and luminescence center separately. we take ito as the underlay material
在光致發光測定中，我們得到了位於360nm和675nm的發光峰，並討論他們的激發譜和發光中心。 -
The optical and electrical properties of the composites of porous silicon / alumina and organic luminescence materials ( pvk, alqs, dbo - ppv ) were also discussed. the pl spectrum of the composite of porous silicon and pvk showed the peak that belonged not only to porous silicon but also to pvk. at the same time, a new peak was found locating at x = 485nm
研究發現，多孔硅pvk復合體系的pl譜兼具有多孔硅和pvk的發光峰，同時在485nm的位置出現了一個新的峰，同時，採用不同的激發波長可以獲得不同的pl譜峰型，這可以從多孔硅和pvk的激發譜中得到解釋。 -
The liquid - phase synthetic method was improved to obtain the sedimentation of yvo4, which makes the procedure more convenient and the sedimentation more compact. based on the syntheses of the raw materials, the czochralski method was used to grow the crystal from different charges. by comparing with the spectrum in the ultra - violet region of the yvo4 crystals grown in the same condition, the result was reached that the presence of the 1552 absorption peak is independent of the direction of the crystal growth and the annealing, but is related to the impurity of the charges
採用多種方法合成了用於晶體生長的yvo _ 4原料，改進了液相合成法中獲得yvo _ 4沉澱的方法，使得該方法更為簡便，獲得的沉澱更加緻密；在原料合成的基礎上，採用提拉法對來源不同的生長原料進行了生長，並通過對在相同氣氛下生長的晶體的紫外透過譜線的對比，指出了該吸收峰的存在與晶體生長方向及有無退火無關，進而提出該吸收峰的存在與合成原料中有無雜質有關。 -
Peak assignment in the region of 4800 - 6500cm - 1 is also completed by mir / nir 2d correlation spectrum in the region of 2800 - 3100 cm - 1 and 4000 - 4800cm - 1
為利用中紅外區已知的、豐富的結構信息研究近紅外光譜帶的分辨與指派打下了基礎。 -
Uranium isotopes and their daughters emit - rays and x - rays during the decay process, their peak area and relative efficiency can be calculated through spectrum analysis
在衰變過程中，鈾及其衰變子體放射出射線和特徵x射線，通過能譜分析可以求出它們的峰面積和相對探測效率。 -
Therefore, the research of the statistical characteristics of double peak spectrum will have the practical significance
因此，對雙峰譜型海浪統計性質的研究具有重要的意義。 -
In addition, effects of several factors such as local site conditions, focal mechanism, epicentral distance and seismic magnitude on these parameters are discussed, and several significative results and conclusions are obtained. in all records there are about 1 / 3 vertical ground motion ’ s peak acceleration bigger than 2 / 3 of the corresponding horizontal one, so the action of vertical ground motion should not to be underestimated. vertical design response spectrum equals that the horizontal design response spectra times 65 % is probably unsafe when period is short, and suggest adopting different coefficients when at different periods
本文基於對大量歐洲強震記錄的研究，分析了地震動豎向與水平向分量在峰值加速度、反應譜值、頻譜周期等參數方面的差異，以及這些參數與場地、震源機制、震級和震中距的關系，得到了以下有意義的結果和結論:在本文分析的地震記錄中大約1 / 3的記錄加速度峰值比大於2 / 3 ，豎向地震動分量的作用不可低估;在短周期，豎向地震動影響系數的最大值僅取為水平向地震動影響系數最大值的65 %是偏於不安全的，可以考慮按周期分段採用不同的折減系數;我國現行抗震規范中設計反應譜特徵周期的取值偏低，可能是偏於不安全的;豎向與水平向地震動分量卓越周期的比值在0 . 7 - 0 . 9之間，豎向設計反應譜的特徵周期應有單獨規定。 -
The application of wavelet transform in the spectrum signal processing is studied. the influence of the transform on the gauss spectrum peak is analyzed. a method is proposed to reduce the noise and background in the spectrum signal obtained by the micro spectrometer
研究了採用小波變換來消除光譜信號中的噪聲和背景信號的方法，並深入研究了小波變換處理對真實光譜信號的影響，提出了採用小波變換消除光譜高頻噪聲和低頻背景信號的方法。
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