spectrum function 中文意思是什麼

spectrum function 解釋
頻譜函數
  • 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。
  • function : n 1 功能，官能，機能，作用。2 〈常 pl 〉職務，職責。3 慶祝儀式；（盛大的）集會，宴會。4 【數學】...
  1. The enzyme 5 - enolpyuvyl - 3 - phosphoshikimic acid synthase ( epsp synthase ; ec2. 5. 1. 19 ), encoded by anoa locus, is a key enzyme present in microorganisms and plants where it has a function in the biosynthesis of aromatic amino acids. glyphosate ( n - phosphonomethyl - glycine ) is an effective non - selective, broad spectrum, postemergence herbicide, which has been shown to inhibit epsp synthase activity in a competitive manner. glyphosate tolerant plants can be mediated by either overproduction of the target enzyme or by the presence of an altered enzyme

    植物和微生物芳香族氨基酸生物合成過程中的一個關鍵酶? ? 5 -烯醇丙酮莽草酸- 3 -磷酸合成酶（ epspsynthase ； ec2 . 5 . 1 . 19 ）由aroa基因編碼，該酶受廣譜滅生性、內吸傳導型除草劑草甘膦的競爭性抑制，將epsp合成酶基因轉入植物中可獲得草甘膦耐受植株。
  2. ( 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。
  3. The principle of the interleaver with output spectra similar to cosine function, based on mzi, is analyzed theoretically. by using the tandem of two mzis, we get the flattop spectrum ; last, grounding on the polarized light interference and multi - beam interference, we analysis the principle of bgti interleaver, and simulate the relations between output spectra and reflectance of g - t resonator. furthermore the flattop output spectrum of bgti interleaver is achieved

    4 、分析了fmzi型interleaver濾波器的工作原理，其輸出光譜曲線為類餘弦函數；採用級聯fmzi方案，實現了interleaver濾波器的光譜平頂光譜輸出；最後，基於偏振光干涉和多光束干涉原理，分析了bgti型interleaver濾波器工作原理，模擬了g - t腔部分反射系數r與輸出光譜的關系，獲得了50ghzbgti型interleaver濾波器平頂化輸出光譜。
  4. 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。
  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. Abstract : the effect of correction of self - consistent potential on electronic structure in simple cubic nanocrystal particles is calculated by means of the green ' s function method in the tight - binding approximation, taking only the nearest neighbor matrix elements into account. the numerical results show that the electronic energy spectrum is shifted, the chemical potential is not equal to the atomic energy level, the electronic density at each lattice point is changed, and the variation of electronic density at surface lattice point is the largest

    文摘:在緊束縛近似下，只計及最近鄰的矩陣元，採用格林函數計算了自洽勢修正對簡立方納米晶體顆粒的電子結構的影響，發現電子能譜發生了移動，化學勢不等於格點原子能級，各格點的電子密度也發生了變化，其中以表面格點的電子密度變化最大。
  7. By using matsubara green function theory, we have studied the magonon spectrum and calculated the magnon dispersion curve on the line in the brillouin zone for different parameters in the system

    利用格林函數方法研究了磁振子聲子相互作用下的二維絕緣鐵磁體的磁振子譜，計算了布里淵區的線上的磁振子色散曲線。
  8. Experimental research also proved that many ingredients in scutellaria such as baicalin 、 baicalein 、 neobaicalein and palmitic acid have the effects of broad spectrum bacteriostasis, hypertension resistance, reducing hyperlipemia, protecting liver, cholagogue function, oxidation resistance, deferring ageing and inhibiting tumor

    現代研究發現黃芩含有黃芩苷、黃芩苷元、黃芩新素、棕櫚酸等有效成分，具有廣譜抑菌作用，還有降壓、降血脂、保肝、利膽、抗氧化、防衰老、抗腫瘤等作用。
  9. The system provided the function : user management, the monitored machine management, the monitored position management, samples management, values management, atom spectrum, infrared spectrum and physics - chemistry performance etc, the software based on pocket pc had been developed

    針對用戶管理，設備管理，部位管理，樣品管理，記錄值管理，紅外光譜管理，原子光譜管理，理化指標管理，污染度管理等常見功能，研究和開發了基於pocketpc環境下的油液監測系統軟體。
  10. This sensor in this paper is based on the characteristic absorption spectrum of acetylene to detect acetylene content and utilizes the optical waveguide all through the process, so it has the intrinsic anti - explosion function, fast response time and good repeatability

    本文研製的吸收型光纖乙炔傳感器是利用乙炔氣體的特徵吸收峰來在線檢測乙炔氣體的含量的，且整個過程利用的是光波導，因此它有本質防爆功能。在檢測乙炔時該傳感器響應快、重復性好。
  11. Then the non - paraxial property of chirped pulsed beam and the variation of the non - paraxial correction induced by the variation of the pulse function are respectively discussed to illustrate the influence of the spectrum property on the non - paraxial property of the pulsed beam

    首先分析了超短脈沖的光譜性質對其傍軸近似條件的影響，然後分別討論了啁啾脈沖的非傍軸性質以及不同脈沖形式所導致的不同非傍軸特性。
  12. A convergence acceleration technique, boundary element method ( bem ), spectrum of two - dimension solutions ( s2ds ) method are used separately in solving dyadic green function of the three domain. next, waveguide narrow - wall slots array ' s is introduced in this paper

    對外部空間，與縫隙腔體區域一樣認為場量與z無關，對所有場量做z方向的fourier變換，得到譜域上的一系列去耦合的二維方程。
  13. For the given sample points, and matrix formed by covariance function with sample points as parameters, when the number of sample points approaches infinite, it is proven that this matrix spectrum will approach the spectral approach theorem for positive - definite kernel of integral equation

    對給定的樣本點，由樣本點為變量的協方差函數構成的矩陣，當樣本點個數趨于無窮大時，證明此矩陣譜逼近於積分方程正定核的譜逼近定理。
  14. The signal process function of the software include these function : digital filter, windowing, auto - correlation function and cross - correlation function, mean and variance, probability density function and probability distribution function statistic ; auto - power spectrum, cross - power spectrum, frequency response function, coherence function, cepstrum analysis based on fft ( fast fourier transfer ) ; joint time - frequency analysis based on stft ( short - time fourier transfer )

    軟體的處理功能包括：數字濾波、時域加窗、自相關與互相關處理、均值和方差計算、概率密度和概率分佈函數計算；在快速傅立葉變換（ fft ）基礎上計算自功率譜、互功率譜、頻率響應函數、相干函數、倒頻譜分析；基於短時傅立葉變換（ stft ）的聯合時頻分析等。
  15. 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。
  16. The method of compressing bandwidth of fringe function is proposed that basis fringe contains discrete spectrum which is based on human vision for real - time display, we also introduce discusses the spatial light modulators ( slms ) based on display system of digital holography and theory of numerical reconstruction of digital holography

    為了達到實時性要求，在滿足人眼視覺的光信息量基礎上，對帶寬壓縮的理論問題進行了研究，提出了基於離散頻譜的帶寬壓縮演算法，並給出了結果。
  17. ( 3 ). the flattening arithmetic of an edfa was presented based on the inter - correlative function between the gain spectrum function of the edfa and that of the reserve transmission spectrum of the lpfg. for optimal matching between the two spectra, the flattening arithmetic calculates the variation of the resonant amplitude and wavelength of the lpfg

    Iii .提出了一種動態增益均衡的平坦演算法，這種演算法的本質就是利用摻鉺光纖放大器增益譜函數和新型長周期光纖光柵的透射譜反轉譜函數的相關性，給出新型長周期光纖光柵諧振峰幅度和位置的調節量，使改變后的新型長周期光纖光柵的反轉譜線能和edfa的增益輸出譜線進行最佳匹配。
  18. A filter whose transfer function is matched with the frequency spectrum function of input signal

    其傳遞函數與輸入信號的頻譜函數相匹配的一種濾波器。
  19. Spread - spectrum function of spread - spectrum communication system

    擴頻通信中的擴頻函數
  20. And we utilize the relation of spectrum function and correlation function to give the way of estimating doppler spread width

    進而通過matlab建立模型，驗證了此方法，並對其中的幾個參數進行了分析和討論。
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