spectrum composition 中文意思是什麼

spectrum composition 解釋
光譜組成
  • 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。
  • composition : n 1 作文（法），作詩（法），作曲（法）；作品，文章；樂曲；文體，措辭。2 編制；結構，構造，組成，...
  1. Ppt ( phosphinothricin ) is the active composition of broad - spectrum, non - selective hercicide basta

    廣譜、非選擇性除草劑basta的活性成分是草丁膦（ phosphinothricin ） 。
  2. Infrared spectrum analysis for the composition of a plastic flexible tube

    紅外光譜法用於塑料軟管成份的分析
  3. 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
  4. The spectrum of a galaxy contains bright and dark lines that are determined by the galaxy ' s temperature, density, and chemical composition

    一個星系的光譜中包含亮與暗的線，這是由星系的溫度、密度和化學成分決定的。
  5. 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。
  6. According to the principle of spread spectrum communication, the anti - interference performance of the technology is discussed and the composition of power line spread spectrum communication is described. based on the spread spectrum technique, a method which is low cost, high communications quality and low bit error for power line carrier communication using single - chip software programming is proposed

    利用擴頻通信原理，分析擴頻通信的抗干擾特性，在此基礎上，闡述了電力線載波通信系統的基本結構，提出了一種利用軟體編程實現電力線載波擴頻通信的方法。該方法不增加硬體成本，即能達到提高通信質量、降低誤碼率的目的。
  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. Was released, which was confirmed by molecular mass and amino acid composition analysis. ultraviolet and circular dichroism spectra were used to test the secondary structure of - mt - 3. distinct from other - mt, - mt - 3 showed a negative trough at about 220nm in the cd spectrum, suggesting that an - helix might exist in its secondary structure

    紫外吸收光譜及圓二色性光譜研究重組- mt - 3的結構。 mt - 3的與其餘mt的結構域不同， - mt - 3的圓二色性光譜在220nm左右為負峰，說明- mt - 3可能包含一個-螺旋的二級結構。
  9. To investigate the space / time distributions and occurrence and evolution of such events, the diffusion pattern over deserts, turbulent transfer features in sandstorm weather, the particle size distribution, mass concentration and its distribution, optic properties, chemical composition and physical factors responsible for the initiation of raising sands, we made integrative observation and sounding of sandstorms deep in the large - scale desert area, including tengri, badanjilin and maowusu, with the items consisting of micrometeorological measurement, 3d wind observation, data from kb - 120 and anderson samplers of mass concentrations of sands with their spectrum, the distribution of aerodynamic particle sizes from the aps3310a, retrieval of aerosols " optic depth from sunphotometer data, assay of the chemical composition by means of neutron activiation analysis ( naa ) and integrated study of all related factors for causing sandstorm to occur, based on the observations of all kinds

    利用所取資料，系統分析了不同強度沙塵天氣條件下沙塵氣溶膠質量濃度和質量濃度譜、粒子譜分佈、光學厚度、化學組分等特徵；綜合分析了影響沙塵起動的諸物理因子在沙塵起動中的作用；用沙塵輸送模式對一次沙塵暴天氣造成的泥雨過程的形成機制進行了模擬。歷史氣象資料統計分析表明，沙塵暴有其高發期（ 4 、 5月）和高發時段（ 14 - 20時） ， 14時到20時之間發生的沙塵暴約占沙塵暴總次數的66 。揚沙和沙塵暴天氣條件下，湍流動量通量和湍流感熱通量都是重要的湍流交換，沙塵暴發生前近地層的超絕熱不穩定對沙塵暴天氣有加強作用。
  10. Measuring technology of multi - channel is the foundation of matter composition and radioactivity verifying by way of nuclear methods. the dissertation aims at developing tendency of measuring technology of multi - channel nuclear energy spectrum, combining the characteristics of field working, focusing on systematically reseach on some key techniques such as the design of multi - channel analyzer ( mca ) and apparatus, with a view to resolve defects exsisting in current portable apparatus

    論文瞄準國內外多道核能譜測量技術的發展趨勢，結合現場工作的特點，針對目前現場多道核能譜測量儀器中存在的諸如儀器功耗、重量、體積偏大，不便於現場操作等問題，在多道脈沖幅度分析器以及儀器的單片機機化等方面作了較為系統的研究。
  11. Scanning electron microscope ( sem ) and energy dispersive spectrum ( eds ) have been used to observe the coating surface and analyze the composition

    通過sem 、光學顯微鏡觀察鍍層表觀形貌及其熱振試驗對鍍層性能進行了表徵。
  12. In examining samples, we measured composition and bonding by chemical analyzer and raman spectrum, and measured surface by atomic force microscope

    在試片的檢測部份，我們利用了化學分析電子儀及拉曼光譜儀分析薄膜之元素組成及其鍵結，並且用原子力顯微鏡觀察其表面形貌。
  13. To this paper we were carried tentatively on spectrum whitening in prestack, and each section after division scale is processed with spectrum whitening, particularly the composition of high frequency is raised apparently, the signal - noise ratio of high frequency raise. the resolution of whole section is better than stack

    本文還嘗試性地在疊前進行譜白化處理，對分尺度后的各個記錄分別進行譜白化，尤其是高頻成分提高得很明顯，有效地提高了高頻信噪比，整個剖面的解析度明顯增強。
  14. The variation of the film composition can be monitored by using the method of spectrum analysis during the film deposition ( for the intensity of the persistent line is proportional to the particle density of the element in the vacuum chamber ). the measurement of the transmission spectrum of the film on a transparent substrate can be used to calculate the film parameters, such as refractive index, extinction coefficient and the thickness of the film. therefore, the combination of the two methods would be helpful to on line monitoring the film constituents and the optical paramenters in the preparation of thin films

    在制備薄膜的過程中，利用光譜分析的方法，以放電光譜特徵譜線強度的變化來反映相應物質成分的變化，以連續光譜光源發出的光透射過薄膜的透射率的變化，來反映薄膜的厚度、折射率、吸收系數等光學參數的變化，從而達到在制膜過程中，對薄膜的成分、厚度等參數進行在線監控的目的
  15. The composition and mechanism of cdse thin films were explored by x - ray energy dispersion analysis ( eds ) and x - ray penetration spectrum ( xps ). the effect of electro - deposition conditions such as potential ( vs. sce ) of cathode, concentration of electrolyte on composition and mechanism of as - fabricated cdse thin films were gained, which provided experimental foundation and ideal basis for template - electro - deposition preparation of cdse nano - wire arrays

    採用eds和xps兩種分析方法對cdse薄膜的組成進行了表徵，得到了陰極電位值（ vs . see ）和電解液濃度對edse薄膜組成的影響關系，為以hzseo3和seso32 -為硒源，用模板一電沉積法制備cdse納米線陣列提供了實驗依據和理論基礎。
  16. From theoretical analysis, we know the existing demodulation methods have limitations as following : one is that the subtraction of the two signals frequencies will display as the result of demodulation when we demodulate two time - domain adding signals without modulating information ( fault information ) ; the other one is that aliasing phenomenon will occur as a result of getting absolute value, detection or square in the process of generalized demodulation analysis, such phenomenon will result in some superfluous frequency composition on the frequency spectrum, which will puzzle the detec tion of mechanical vibration. if the sampling frequency is selected from a suitable range, the aliasing phenomenon will be avoided ; the last one is that aliasing frequencies will be produced in zoom demodulation analysis because this algorithm cannot employ digital low - pass filtering to avert the folding frequencies of higher harmonics in the process of zoom sub - sampling

    現有的解調分析方法存在以下三種局限性：將不包括調制信息（故障信息）的兩時域相加信號，也以其頻率之差作為解調信號而解出；廣義檢波濾波解調分析中，由於取絕對值、檢波或平方過程可能產生混頻效應，在解調譜中表現為無法分析的頻率成分，並由此推導出避免這種混頻現象的采樣頻率的選取范圍，從根本上避免此類誤診斷的產生；幾種細化解調分析新演算法中，因為無法在細化分析的選抽時進行數字低通濾波，有可能會出現調制頻率的高次諧波成分發生頻率混疊而反折到低頻部分的現象。
  17. In order to research systematically the kinetics of the redox reaction between tbh and np ( vi ), the main contents of the work in this paper are as follows. ( 1 ) tbh is synthesized by direct alkylization in chsoh media. the structure and composition of the product are characterized by elemental analysis, uv - vis spectrum, ir spectrum, ms spectrum and nmr spectrum respectively

    為深入系統的研究特丁基肼還原np （ ）的動力學，為后處理工藝流程提供實驗和理論依據，本文研究了以下內容： （ 1 ）以甲醇為溶劑，用直接烷基化的方法合成了特丁基肼，並通過元素分析、紫外光譜、紅外光譜、質譜、核磁共振譜等手段對產品進行表徵。
  18. At end - 1998, the cumulative value of hong kong s realised direct investment in the mainland was estimated at us $ 139 billion, accounting for about 52 per cent of the total value. there has been a notable shift in the composition of hong kong s direct investment in the mainland in recent years, from industrial processing to a wider spectrum of business ventures such as hotels and tourist - related facilities, real estate and infrastructure development. relative to other places in the mainland, hong kong s economic links with guangdong are much more intimate

    一九九八年年底時，香港在內地的已實現直接投資累積價值估計達1 ， 390億美元，約占總投資額52 % 。值得留意的是，近年來，香港在內地的直接投資已由工業加工轉為更廣泛的商業經營，例如酒店和與旅客有關的設施、地產和基礎建設發展等。香港與廣東省的經濟聯系，比與內地其他地方的聯系更為密切。
  19. Introductions are made in the present study on the overall design of the data acquisition system of radon chamber, the composition of the hardware of various parts, the structural framework between the software and hardware, the display spectrum of the data acquisition system, and part of the major qualities of the a spectrometry within the system

    摘要介紹了氡室數據採集系統的整體設計方案，各部分硬體結構組成，系統軟硬體之間的結構框架，數據採集系統的顯示圖譜，以及系統中譜測量的部分主要性能。
  20. To solve cylinder liner crack problem of a certain large marine diesel engine, the crack was studied and analysed being aimed at the cylinder liner which created the crack by means of colouring crack detection, electron microscope scanning, energy spectrum analysis, chemical composition analysis and so on. also the temperature distribution and the stress condition of the cylinder liner were researched and analysed utilising measurement on board ship and finite element analysis method. finally the main causes of the cylinder liner crack were synthetically analysed and determined

    為解決某大型船舶柴油機氣缸套裂紋故障問題，利用著色探傷、電子顯微鏡掃描、能譜分析、化學成分分析等方法對其裂紋進行了研究分析；並利用實船測試、有限元分析等方法對該型缸套的溫度分佈狀況、應力狀況，進行了研究分析.確定了缸套開裂的基本原因
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