背景波 的英文怎麼說
中文拼音 [bēijǐngbō]
背景波
英文
background wave-
They had found the cool afterglow of the big bang : the cosmic microwave background radiation
他們發現的是大霹靂冷卻后的餘暉：宇宙微波背景輻射。And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed
研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。However, the background of this humanitarian and producer showed in the past performances that in 1991 mt. pinatubo volcanic eruption ; 1993 southern california fires ; the oklahoma city bombing ; the 1994 northridge earthquake, including numerous charities and causes like the american cancer society, the american foundation for aids research, the international red cross, the salvation army, department of veteran affairs, health education alternative liaison heal the cotonou infant s in terms of cash donation and manpower in implementing its relief capabilities
一位叄與幕後工作的朋友為我們提供了一份令人刮目相看的表演名單，然而最引人注目的則是他們在歷年的演出節目中所提供賑災事跡的背景資料：一九九一年比納杜波火山爆發一九九三年南加州大火奧克拉荷馬市政大樓爆炸慘劇一九九四年加州北嶺地震等賑災工作，除了提供金錢資助之外，他們也提供人力救援。A 3d fiducial - referential un - esprit algorithm suitable for joint azimuth - elevation - carrier estimation in unknown noise environment
未知噪聲背景下的波達方向及載波頻率三維聯合估計方法Under this background, this thesis of master ' s degree studies and proposes a texture analysis method for handwriting image based on integer - to - integer wavelet transform by synthesizing methods that were excogitated
在這樣的背景下，本文通過綜合已有筆跡鑒別方法，研究提出了一種基於整數小波系數的筆跡鑒別方法。The concept of irradiance signal - to - noise ratio ( snr ) on the target plane and the minimum of the irradiance that can be detected by the detector was taken as the beginning, combined with a thorough analysis of the spectrum radiating feature of the target and the sky background, the atmosphere conditions, spectral filtering and the influence that the various components in the system have on the target irradiance on the detector ' s target plane and the background irradiance snr, the equation of the flying bomb ' s effect range affected by the point of burst measuring system is made, and all related factors that have an impact on the effect range are analyzed as well
從探測器靶面上輻照度信噪比的概念、探測器的可探測輻照度最小值出發，在詳細分析目標、天空背景的光譜輻射特性、大氣條件、光譜濾波技術以及系統各環節對探測器靶面上目標與背景輻照度信噪比的影響的基礎上，推導了炸點測量系統對爆炸的飛行彈體的作用距離方程，分析了影響作用距離的諸因素。The first day cover sets the scene of zheng he s fleet under full sail in rough seas with seagulls in flight, representative of the determination and enterprising spirit of these formidable explorations, against a backdrop of fine silk that symbolises success in foreign trade
首日封繪畫滾滾波濤中高張雲帆的船隊。前方的海鷗翱翔展翅，隱喻船隊不畏險阻、奮勇向前的精神；背景則以精美的絲綢襯托，象徵通商貿易的美滿成果。The main research advances can be summarized as follows : ( 1 ) study the signal processing ' s performances and methods of homing torpedo system comprehensively, in order to setting up a corresponding mathematical models ; ( 2 ) analyze the ocean channel ' s effects on the work of homing system, then found some models such as target echo signal, noise ( including background noise, target radiating noise, etc ), ocean reverberation. according to them, simulate the array signal ; ( 3 ) the system structure, every function blocks composing are studied and founded thoroughly. then, discuss methods of signal processing in time domain and airspace domain ; ( 4 ) program the simulation software of torpedo ' s homing system according to the simulation models and flow charts, which connected with torpedo ' s control part
本文所作的主要工作及研究成果主要有以下幾個方面： （ 1 ）對自導工作過程中的信號與信息處理的基本理論與方法進行了較為全面的研究，為建立一個較為完備的自導模擬系統提供了理論基礎； （ 2 ）討論了自導系統工作過程中海洋通道對目標回波信號與目標輻射噪聲信號等的影響，建立回波信號的數學模型、環境場中的噪聲信號模型（包括海洋環境噪聲、目標輻射噪聲與魚雷背景噪聲等）與海洋混響模型，模擬產生了聲自導系統基陣接收到的回波信號與噪聲信號； （ 3 ）深入研究並建立了自導模擬系統的總體框架，給出各個具體功能模塊組成，討論了聲自導系統對信號的時域與空域處理，並結合模擬程序中陣列信號處理模塊，給出固定多通道波束形成的模擬實現過程； （ 4 ）根據系統的模擬模型與已建立的模擬流程圖編制了通用魚雷模擬器自導系統模擬軟體，通過網路與控制系統相連，組成完整的魚雷模擬器。( 2 ) the emission spectra of laser ablation metal copper plasma were measured. the detailed mechanism of plume emission of cu plasma was qualitatively explained using a simple model based on excitation of atom and ion in plume arising from inelastic collision between the elemental species and electron with high kinetic energy. under the local thermal equilibrium model, the electronic temperature of copper plasma was deduced to be in the 104 scale by its emission lines
（ 2 ） cu等離子體光譜：在420 570nm波長范圍內觀測了激光燒蝕cu等離子體的光譜和各發射譜線在等離子體中的空間分佈；比較了激光能量對cu等離子體發射光譜、電子溫度的影響；用局部熱力學平衡（ lte ）近似，測得cu等離子體的電子溫度為104k數量級；在不同背景氣壓下，觀測了激光燒蝕cu等離子體光譜的空間分佈。This thesis deals with the application of image segmentation to the automatic identification of a bar code image with a complex background. the bar code image is segmented by the program which is coded by vc + + 6. 0, then by image erosion, the background such as characters etc is processed, yielding isolated points which are filtered by a median filter. the relative position of the bar code does not change
本論文將圖像分割應用在有復雜背景的條碼圖像自動識別上，運用vc + + 6 . 0編寫的程序，處理分割的條碼圖像，然後用圖像腐蝕的方法，處理圖像上的文字等背景使其變成一些孤立點，再通過中值濾波去除圖像上的噪聲點，此時圖像中條碼的相對位置不變。Using her scientific background, olive integrates brainwave biofeedback training, educational kinesiology, imperative self analysis, sonic neurotechnologies, and other tools into a total system for personal, professional, and organization transformation
應用她的科學背景，綜合腦波生物回饋訓練、教育肌動學、生命藍圖分析、腦神經科學及其他工具，劉儀整理出一個完整的系統，幫助一般人、專業人士及組織做核心的轉化。Two - dimensional harmonic retrieval in correlative multiplicative and additive noise
相關乘性和加性噪聲背景下的二維諧波恢復But wmap, with its ability to resolves slight temperature fluctuations down to millionths of a degree, is still able to detect these minute differences and produces the finest full sky thermogram of the cosmic background
但由於wmap的超高靈敏度儀器可測量低至數百萬分之一度的溫差，它才能不負所託，得出至今最精細的全天微波背景輻射溫度圖。The most achievement is that we firstly obtain the analytic accurate solution of the modal fields of the waveguide structure and find some available character : ( 1 ) the different uniaxial crystal materials have the different propagation properties ; ( 2 ) when the optical axis of the crystal is on the plane that is made up of the normal direction of the waveguide plane and the propagation, there are te mode and tm mode in this special waveguide, but the principal mode is different of the character of the uniaxial crystal, the principal mode is the principal mode of te mode for the negative uniaxial crystal, but the one of tm mode for the positive uniaxial crystal ; ( 3 ) when the crystal optical - axis parallel to the waveguide plane, for the positive uniaxial crystal material, the principal mode of the waveguide is a te wave, which can be excited by the light at any frequency ; when the light frequency satisfies a single mode propagation condition, there will be only the principal mode propagating in the waveguide, otherwise some of the higher order modes can be excited, which are neither te modes, nor tm modes, but the hybrid guided modes
本文就是在此背景下，利用金屬波導和單軸晶體的一些特性，結合麥克斯韋方程組和波導的邊界條件，從三種不同的情況研究了光在對稱平面單軸晶體金屬波導（波導層是單軸晶體，兩個波導界面均為金屬）內的傳輸特性，其主要貢獻為，首次解析地得到了這種波導結構下模式場的精確解，並發現了一些有用的特性： （ 1 ）模式場的性質因單軸晶體的性質不同而異； （ 2 ）當單軸晶體光軸位於波導界面法方向與傳輸方向構成的平面內時，波導中傳輸te波和tm波，只不過其主模因單軸晶體的性質不同而異，當波導層介質為負單軸晶體時，波導主模是te波主模，而波導層介質為正單軸晶體時波導主模是tm波主模。 （ 3 ）當單軸晶體光軸位於波導面內時，對于正單軸晶體，波導的主模是橫電波te _ 0模，任何頻率的光波均可激勵該模式；當光波波長滿足一定條件時，波導內傳輸單模，否則，將激勵起高階模式，高階模即匪te波，也匪tm波，而是兩者耦合而成的混合模。In order to reduce the musical residual noise and the background noise, a speech enhancement method based on masking properties of the human auditory system is described. this method uses bark wavelet packet transform to simulate the frequency feature of human auditory model to get the threshold
本文以最大限度減少殘留噪聲和背景噪聲為目的，採用bark子波分析的方法模擬人耳基底膜的頻率分析特性來進行語音增強，重點進行模擬人耳聽覺掩蔽效應來確定除噪閾值的研究。Topics include : planets, planet formation ; stars, the sun, " normal " stars, star formation ; stellar evolution, supernovae, compact objects ( white dwarfs, neutron stars, and black holes ), plusars, binary x - ray sources ; star clusters, globular and open clusters ; interstellar medium, gas, dust, magnetic fields, cosmic rays ; distance ladder ; galaxies, normal and active galaxies, jets ; gravitational lensing ; large scaling structure ; newtonian cosmology, dynamical expansion and thermal history of the universe ; cosmic microwave background radiation ; big - bang nucleosynthesis
課程的主題包含了：行星、行星形成；恆星、太陽、正常的恆星、恆星形成；恆星演化、超新星、緻密天體（白矮星、中子星及黑洞） 、波霎、雙x -射線源；星團、球狀及疏散星團；星際介質、氣體、塵埃、磁場、宇宙射線；距離階梯；星系、正常及活躍星系、噴流；重力透鏡；大尺度結構；牛頓宇宙學、宇宙的動力膨脹及溫度發展歷史；宇宙背景微波輻射；大霹靂核合成。Part three : according to the above study, writer leads some policies, for our choice, on a continuing advance of our real estate industry. this part is composed of chapter four. lt is important how to design or choose the policy on real estate industry for promotion lasting and continuous development of real estate industry. you have to meet this problem when you analyze and study of business cycle fluctuation of real estate industry
該部分內容由第4章構成，在房地產經濟周期波動運行背景下，特別是對處于經濟轉軌時期的中國而言，如何促進房地產業實現長期穩定增長，是制定和選擇房地產業政策時面臨的一個重要問題，同時也是在分析和研究房地產周期波動時必須正面回答的問題，本部分分析了促進房地產業穩定增長的政策選擇。This paper focuses on the research of the stress mechanism of the ribbed shell structure in statics, dynamics and under the explosive load on the basis of the engineering practice of cave depot of single aircraft. in this paper, according to the classical shell theories, the basic differential equilibrium of the ribbed shell structure and the finite element analysis of 3d rippled plate are established, in which the function of annular ribs reinforcement bars and 3d ripped steel plates are distributed in the range of the steel, and the functions along the longitude direction of tension, bending, and torsion are neglected ; applied with dynamic analytical theory, the dynamic model of ribbed shell structure and the analytical theory model of elastic - plastic are set up ; the triangle series method is used to solve the displacement and stress under the distributed load and the concentrated load of the ribbed shell structure
本文以軍用機場地面單機掩蔽庫工程建設為工程背景，首次對內襯三維波紋鋼板混凝土拱型復合結構的受力機理進行了靜力、動力和爆炸荷載的分析研究。根據將橫肋、鋼筋及三維波紋鋼板的作用均勻分佈在殼體范圍內的情況，忽略橫肋、鋼筋及三維波紋鋼板沿殼體母線方向的抗拉、抗彎及其抗扭作用，首次推導出了內襯三維波紋鋼板混凝土殼體的微分平衡方程，建立了有限元計算模型，並採用三角函數法，求解了三維波紋鋼板混凝土拱型復合結構在分佈荷載和集中荷載作用下的位移響應和應力響應，並與普通殼體進行了比較。Cyclicity character is one of the most important attributes of depositional strata, and it looks more important in the terrestrial sediments
摘要旋迴性特徵是沉積巖層最為重要的屬性之一，尤其在對于區域地質背景波動做出敏感響應的陸相盆地沉積序列當中更是如此。Rhythmicility or periodicity of the depositional strata is influenced by the fluctuation of sea - level to a certain extent, but it must be the response of depositional course to the structural activity in extensive significance
研究表明，沉積巖層的韻律性或旋迴性特徵在一定程度上受海（湖）平面變化影響，但從更加廣泛的意義上來看，應是沉積過程對于區域地質背景波動的響應，其主控因素是構造波動。分享友人