時變譜 的英文怎麼說

中文拼音 [shíbiànpǔ]
時變譜 英文
time varying spectrum
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 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）...
  1. And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results

    接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。
  2. The occurrence of odd-parity shape oscillations in the saddle-point spectrum plays an important role in the interpretation of asymmetry and anisotropy in the fission process.

    在裂變過程中，解釋非對稱性和非各向同性時，奇宇稱形狀振蕩在鞍點譜中起主要作用。
  3. The changing tendencies of the relative contents of phosphorous contained substances have been detected by in - vivo " p magnetic resonance spectroscopy ( in - vivo " p mrs ) during the whole hatching process. in - vivo ] p mrs proved the catabolism of adenosine 5 ' - triphosphate ( atp ), phosphorous ester and phosphocreatine ( pcr ) when the embryo dead. the results could be used to deduce the conversion of phosphorous contained metabolites during the chicken embryo developed

    用活體核磁共振定域氫譜（ in - vivohmagneticresonancespectroscopy ， in - vivohmrs ）對胚胎發育過程中羊水和蛋白、蛋黃的成分進行了分析；用活體磷譜（ in - vivo 』 』 pmrs ）的方法分析了在整個胚胎發育過程中含磷代謝物的相對含量隨時間的變化，表明了磷脂類物質及三磷酸腺苷（ atp ） 、磷酸肌酸（ pcr ）在此過程中的變化及可能的相互轉化的趨勢，胚胎死亡后的磷譜也證明了磷脂類物質及三磷酸腺苷（ atp ） 、磷酸肌酸（ pcr ）在死亡過程中降解為無機磷的現象。
  4. The results of the experiment show that the synthesized index, unsteady index and steady index inflect the stability margin of the compressor well. and show that the insert - board experiment can get the enough weight in the synthesized index. and also show that the low - press - area of the steady total - press moves along the rotor circumvolving direction

    試驗結果表明，綜合畸變指數，動態畸變指數，穩態畸變指數對壓氣機穩定性有很大作用;同時試驗還表明，插板能夠產生較大的動態畸變指數分量;穩態壓力圖譜低壓區隨著轉子轉動方向轉動;以及其他一些有益的結果。
  5. Elastic collision and inelastic collision are considered in oxygen molecule, nitrogen molecule by electron impart. the mail simulation results were as follow : ( 1 ) the variations of drift velocity and the average energy of electron with the e / n in o2 and n2 are obtained. the number of electrons for excitation, ionization, dissociation and dissociative ionization collision with the e / n and the energy of electron are analyzed emphatically

    考慮了各種彈性和非彈性碰撞過程，在純氧氣、純氮氣中，給出了不同簡化場e n條件下的電子漂移速度和平均電子能量的變化；著重分析了激發、電離、分解及分解電離碰撞的粒子數隨e n 、電子能量的變化，同時計算了激發發射光譜的波長。
  6. Objective to investigate the effects of fluid shear stress on il - 8 gene in human umbilical vein endothelial cells ( huvecs ) and the roles of time course of low shear stress and intensity of fluid shear stress using lightcycler ? system ; to investigate the gene expression profiles in huvecs exposed on low shear stress ( 4. 20 dyne / cm2, 2 h ) and incubated by 17 p - estradiol ( 10 - 7 m ) + low shear stress ( 4. 20 dyne / cm2, 2 h ) using the cdna microarray approach. methods endothelial cells were isolated from human umbilical cord veins by collagenase treatment as described by jaffe and modified

    目的探討人臍靜脈內皮細胞（ humanumbilicalveinendothelialcells ， huvecs ）在流體切應力作用下il - 8基因的誘導表達以及切應力的作用時間和作用強度對il - 8基因表達影響的變化規律；利用表達譜基因晶元技術研究內皮細胞在低切應力（ 4 . 20dyne cm ~ 2 ， 2h ）作用下其切應力相關基因的表達情況以及生理濃度（ 10 ~ （ - 7 ）的17 -雌二醇孵育內皮細胞48h ，再經同樣條件的切應力處理后對內皮細胞切應力相關基因表達的可能影響。
  7. The change of agglutinating activity, cd spectrum and fls of lra in different temperature, ph and different chemicals indicated that lra had partial hemagglutinating activity at ph2. 0 ( 50 % ), a temperature above 100 ( 60 % ) and after modified by n - bromosuccinimide ( mbs ), the activity lost completely, modified by depc, the lra had a little activity, the other groups modified such as arg, tyr, glu, asp did n ' t effect the hemagglutinating activity of lra. the result indicated that trp residues were essential to the hemagglutinating activity and were involved in carbohydrate - binding site

    研究不同溫度、 ph和基團特異性化學修飾后lra凝血活性和促淋巴細胞有絲分裂的變化、圓二色譜和熒光光譜的變化，當溫度達80以上時，活性開始下降，到100時活性有60 %保留:當ph為2時，活性保留50 % ， ph為4一12對活性的影響不大;用nbs修飾trp后， t即的旦一叫睬基的破壞使活性完全喪失，表明trp對凝血活性是至關重要的， arg 、 tyr 、 glu 、 asp被修飾后， lra的凝血活性並未受到大的影響，但tyr修飾后lra的促有絲分裂活性降低
  8. This paper discusses the characteristic of inductivity coupled plasm atomic excite spectroscope and applies the analysis method to measure the atmosphere corrosion rusty layer samples from qingdao and chengdu. we get the relative content of each element of rusty layer and show the charitable situation that the relative content varied with the change of corroded environment and time

    概述了電感耦合等離子體光譜法的特點，並運用該光譜法對青島和成都兩地的大氣腐蝕銹層樣品進行了比較測試，得出了銹層中各元素的相對含量及其隨腐蝕環境和時間的變化情況
  9. The music judders and strains as if several clashing scores were being played at the same time. ataxia also looks fabulous with its design team - conjuring between them a world of luminous, unstable beauty where neon colours flare, surfaces buckle and reflect, and the costumes mutate, at a flick of lighting, between silver, blue and gold. - the guardian - friday june 4, 2004

    音樂猛烈地顫抖緊張，彷彿在同時演奏幾個相互沖突的樂譜《美麗迷惘》的設計組也非常棒他們魔法般地設計了一個明亮的不穩定的美麗世界，在這個世界里，霓虹燈的顏色閃耀著，舞臺表面彎曲著反射光線，隨著燈光的閃動，服裝變幻成銀色、藍色和金色。 」
  10. There is a period of soil contents range from ten to twenty five days over the humid discussed area in summer, and the period is not obvious at the discussed zone of close oasis desert area in summer and winter. ( 2 ) soil temperature exits several periodic variations of different depths ranging from six to twenty four days in heihe region, and nine to thirty days in gaize and shiquanhe region. it also shows that gradient of soil temperature affects on the soil content movement more greatly in summer. ( 3 ) the land surface temperature of yangtze river lower region is retrieved from noaa - ahvrr data

    （ 2 ）根據土壤溫濕資料，採用功率譜分析、 pca分析等方法，分析了兩種典型下墊面土壤溫度的時空分佈特徵及其對土壤水分運動的影響，發現研究區土壤溫度除日和年變化周期外還存在6 30天的不同周期；下墊面的非均勻性及其季節變化及溫度梯度變化對土壤水分運動有很大影響，冬季溫度梯度變化對土壤含水量影響大於夏季溫度梯度對上壤含水量變化的影響，且溫度梯度與水分運動方向相反。
  11. 6. by comparing the relative intensity between 914nm radiation and 1064nm radiation in nd : yvo4 with different nd concentration. we design a 457nm all - solid - state blue laser as pumping source for qpm - opo

    在不同摻雜濃度時， gi4nm譜線與1064urn譜線的輸出強度的相對變化，進廳了半導體激光器泵浦d ： yv0 。
  12. Amplitude correction approach using average of several points in discrete spectrum for analyzing the dynamic signal of rotating machinery with varying speed

    變速機械弱時變信號幅值譜校正的多點平均法
  13. By solving the stochastic differential equations describing the noise performance of the cmos gilbert mixer, the time - varying power spectral density of its output noise at high frequencies is given

    通過求解描述cmosgilbert型混頻器噪聲性能的隨機微分方程，本文給出了該類型混頻器高頻輸出噪聲的時變功率譜密度。
  14. Non - periodical time function consists of time harmonics with continuous frequency spectrum

    非周期時變由連續頻譜之弦波所構成。
  15. The simulation results based on siso and mimo systems show that the proposed scheme could effectively eliminate the time - variant fading characteristics of wireless channel and under an acceptable demand of ber, the frequency efficiency is enhanced greatly and besides, dynamic encoding is implemented with low complexity and high efficiency

    通過在單天線和多天線系統中的模擬，表明該方案可以有效的克服無線通道的時變衰落特性，在滿足誤碼率性能要求的基礎上可以提高系統頻譜利用率，且實現復雜度低。
  16. The defect of thes powe control and allocation method is without consideraon of the induence of all of the other users on the desired user and the influence of time - varying channel, so it can not maximize the capacity, and deduces the frequency waste

    這種功率分配與控制方法的缺點是沒有考慮到系統內其他用戶對期望用戶的影響以及通道時變特性的影響，不能最大化系統的容量，造成了頻譜資源的浪費。
  17. After transient state process ( earthquake, etc ) having occurred, present - day crustal movement ( the changing process with time, the space distribution and the structure of spectrum ) will return to " stable steady state ( dynamic balancing state ) " voluntarily

    在地震等暫態過程發生后，現今地殼運動（時變過程、空間分佈、頻譜結構）仍將自動回歸到「穩定態（動平衡態） 」 。
  18. Abstract : speech signal spectrum analysis is the time - varied spectrum analysis. fft technique on speech signal spectrum analysis are discussed in detail in this paper

    文摘:針對語音信號頻譜分析實際上是時變頻譜分析的特性，詳細地討論了用fft技術對語音進行頻譜分析過程中的方法問題。
  19. The ability to provide control for time - varying spectral components of a sound is of critical importance for sound synthesis

    能夠控制聲音的時變頻譜要素對聲音合成來說是至關重要的。
  20. Based on introducing the mathematical principles, time spectrum characteristics and equivalent electric current ring properties of several typical models, the author has put forward a technique for rapid interpretation of data obtained by the transient electromagnetic method

    摘要通過介紹幾種典型模型的數理原理、時間譜特性和等效電流環性質，提出了一套瞬變電磁法成果資料的快捷解釋方法。
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