聲子密度 的英文怎麼說
中文拼音 [shēngzimìdù]
聲子密度
英文
phonon density-
Nowadays with the booming development of microelectronic technique, the functions of the components of machinery, electricity, magnetism, optics, acoustics and thermotics have been improved rapidly. and the micromation of components, the integration of electronic equipments, the worse working environment, the increasing requirement and emi, all of these make the structural design of electronic equipments more and more important
在微電子學高度發展的今天，促使機、電、磁、光、聲和熱等元器件功能飛速提高，隨著元器件微型化，電子設備趨向集成化，再加上一些日趨惡劣的工作環境，各種使用要求的提高，空間電磁環境的干擾，以及由於裝填密度高，產生的內在干擾等，使得電子設備的結構設計變得越來越重要。With the development of power electronics technology and devices in recent years, instead of using the industrial frequency transformer to boost voltage, dc / dc high frequency converter achieves the function. the system has higher power density and conversion efficiency, and the size, weight, ac noise of which has been greatly reduced
近年來，隨著電力電子技術與器件的迅速發展，使用dc dc高頻變換技術代替工頻升壓，系統具有較高的功率密度與轉換效率，裝置體積、重量與交流噪聲大大減小。This thesis was divided into eight chapters, and the main results and innovations obtained here can be summarized as follows : ( 1 ) the physics model of tsrs in frequency conversion crystals has been built up firstly. based on quantum - mechanical viewpoints and the following physical processes and parameters : the two - photo interaction of light with matter, paraxial diffraction of stokes, langevin noise sources, reflection at the faces and the edges of crystals, gain coefficient, beam aperture, pulse width and fluence of 3, the physics model of tsrs in kdp and kdp crystals acting as high - fluence frequency convector and the paraxial operator maxwell - bloch - langevin equations have been built up
全文共分八章，取得的主要成果及創新點如下： （ 1 ）首次建立了諧波轉換晶體的tsrs物理模型本文根據量子力學原理，在考慮如下物理過程和參量的基礎上：光與物質的雙光子相互作用； stokes光的傍軸衍射； langevin （郎茲萬）噪聲源；晶體表面反射和端面反射；增益系數、光束口徑、脈寬和三倍頻光能量密度，推導出高通量激光在kdp和kd ~ * p諧波轉換晶體中的tsrs物理模型和空間上的近軸算符maxwell - bloch - langevin方程組。Present a modified particle filter ( pf ) algorithm based on the los / nlos binary state information of propagation environment using the numerical method of the probability density function ( pdf ) about the hybrid noise. the key idea is using numerical method to calculate the hybrid noise pdf, and integrating binary environment information to get filtering result
2 .給出了應用粒子濾波器改進直達波與非直達波混合環境中移動終端跟蹤性能的新演算法，特色是利用數值方法計算混合噪聲密度函數，結合二元環境信息完成濾波估計。The entropy or number of states of system or subsystem are closely related to interaction of particles and energy level distribution, therefore, to study the temperature dependence of the specific heat may supply some important and useful microscopic information which may play an important role in understanding electronic structure, density of state, phonon spectrum etc. the specific heat measurements at low temperatures also play important roles in the finding of the third law of thermodynamics, the quantum theory of solid and bcs theory for superconducting etc. moreover, specific heat measurements help us to understand the different kinds of phase transitions ( such as : structural phase transition, magnetic phase transition, superconducting phase transition etc. ) and the scaling behavior near the critical point
系統、子系統的熵或微觀狀態數與微觀粒子間的相互作用及能級分佈密切相關，因此研究比熱與溫度的依賴關系能夠提供被測量系統許多極其有用的微觀信息，對理解固體的電子結構、電子態密度、聲子譜等起著十分重要的作用。低溫比熱的測量和研究對熱力學第三定律、固體量子理論和超導bcs等理論的建立起到了積極的推動作用。比熱研究還有助於認識各類相變如結構相變，磁性相變，超導相變等及臨界點附近的標度規律。In order to recognize low resistivity oil layers, we have used many methods, such as engraving method, resistivity curve overlapping method, density and acoustic curves overlapping method, or density, acoustic and neutron curves overlapping method, as well as quantitative interpretation method, etc
為了識別低電阻油層，我們採用了多種方法，例如圖版法、電阻率曲線重疊法、密度與聲波曲線重疊法或密度、聲波與中子曲線重疊法，以及定量解釋法等。Effects of axial magnetic field on density and voltage noise of vacuum arc charged particle
縱向磁場對電弧帶電粒子密度和電壓噪聲的影響The above - mentioned research results will supply valuable foundation of theory and experiment for ultrasonic detection of small inclusions and hardening particles density
論文的上述研究成果，對于進一步開展ly12鋁合金細小夾雜物及強化粒子密度的超聲檢測提供了重要的理論及實驗依據。Further, analyse the characteristic of the seismic wavefield of fractural reservoir and the influence caused by fracture density, property of the filled material and the strike of fracture. fifthly, in term of research of zhangshulun et al., concisely discuss the arithmetic of the plane wave forward modeling and migration with phase shift method, in prestack common offset gathers and check the arithmetic by numerical simulation
第四，用基於彈性?聲學近似的反射系數計算公式和本文提出的付氏變換子波生成法得到縫洞模型的反射系數模型和子波模型並用vrselrf波場延拓運算元對其進行地震波場數值模擬；進一步分析了縫洞儲層的地震波場特徵及縫洞密度、充填物性質和裂縫走向對其波場特徵的影響。Topics covered include crystal structure and band theory, density functional theory, a survey of properties of metals and semiconductors, quantum hall effect, phonons, electron phonon interaction and superconductivity
內容包括了晶體結構和能帶理論，密度泛函理論，金屬和半導體特性概論，量子霍爾效應，聲子，電子-聲子的相互作用以及超導電性。My study involves two areas in quantum key distribution protocol. first, in the field of the b92 protocol, it is first calculated and analyzed for the holevo upper bound of b92 protocol to noise and eavesdropping, the fidelity, a lower bound on the guaranteed privacy and the capacity for classical information over phase flip channels. it is computed and validated for that projective measurements increase quantum entropy
本文主要涉及兩個方面:一、 b92量子密鑰分配協議方面，計算分析了b92協議對噪聲和竊聽的holevo上界，以及通過相位翻轉通道的通道保真度，通道可靠的保密性量子熵下界和對經典信息的容量，計算驗證了定理投影測量增加量子熵，分析了測量前後量子狀態的變化，並用計算機模擬繪制了圖形，能夠清楚直觀地分析比較。With the development of the electronic technology, the higher requirements of power supply are raised including high efficiency, high power density, low emi and rapid dynamic response
隨著電子技術的發展，用設備對電源要求不斷提高，開關電源正向著效率高、功率密度大、可靠性高、電磁干擾低、無噪聲、維護方便的方向發展。With the development of the electronic technology, the higher requirements of power supply are raised including high efficiency, high power density, low emi and rapid dynamic response. a hysteresis - band instantaneous current control pwm technique is popularly used because of its simplicity of implementation, fast current control response, and inherent peak current limiting capability
隨著電子技術的發展，用電設備對電源要求不斷提高，開關電源正向著效率高、功率密度大、可靠性高、電磁干擾低、無噪聲、維護方便的方向發展。A collinear acoustooptic - deflector of pronton - exchanged linbo3 channel wave - guide is studied. the theoretical analysis, structure design and device fabrication of linbo3 pronton - exchanged acoustooptic wave - guided deflector have been finished in this thesis. the width of wave - guide, the width, spacing, effective aperture and width of electrode of interdigital transduces have been theoretically analyzed and designed
本論文研究了一種質子交換linbo3溝道波導共線式聲光偏轉器，其特點是利用了溝道波導的橫向約束，限制了聲波的發散和衍射效應，使得窄孔徑電極結構得以實現，從而增加了功率密度，使總的聲場驅動功率降低。( 4 ) analysis of item illustrate that, during the 19 influencing factors, the influences of post facilities maturity, atmosphere noise pollution condition, geologic and physiognomy condition, flood submerge condition and programming qualification have no difference in regions on business land price, the influence of green - belt park and geologic and physiognomy condition have no difference in regions on residence land price, the influence of rout net density and post facilities maturity have no difference in regions on industry land price
項目分析說明， 19個影響宜賓市城區地價的因子中，郵政設施完備度，大氣噪聲污染狀況，地質地貌條件，洪水淹沒狀況，規劃條件這5個因子對商業用地地價的影響沒有區域差異；綠地公園影響度，地質地貌條件這2個因子對住宅用地地價的影響沒有區域差異；路網密度，郵政設施完備度、洪水淹沒狀況這3個因子對工業用地地價的影響沒有區域差異。This paper is a part of scientific research item " coupling of sound and cement bond logging of shipping hermetic cabin and the influence of multi - variable environment simulative hermetic cabin to body ". it mainly studied the measurement and control system of the simulative hermetic cabin to realize the adjustment of temperature, humidity, stress, oxygen, carbon dioxide, vibration and noise etc. and the parts of system design to the hermetic cabin and corresponding have carried on the technology explanation
本論文是「船舶密封艙內的聲固耦合和多變量環境對生理功能的影響」科研項目的子課題，主要對模擬密封艙的測控系統進行研究，以實現密封艙對溫度、濕度、壓力、氧氣濃度、 co _ 2濃度、振動和噪聲等變量的調節。Using gamma ray log, neutron log, density log and sonic log, with the algorithm of fuzzy clustering, we can realize lithology recognition
摘要利用測井數據中的自然伽瑪、中子、聲波和密度測井曲線所蘊含的巖性信息，用模糊聚類演算法實現巖性的自動劃分。Along with increase of pressure, the parameters such as velocity, amplitude, main frequency and quality factor of seismic wave change big gradually, while change very weakly with the change of temperature. through testing research for artificial crack and pore model, we conclude that crack density, azimuth, opening and the change of pore have obvious influences on speed, amplitude, attenuation ( or quality factor ) and main frequency of seismic wave etc. but, seismic wave dynamic characteristics are more evident than its kinematical characteristics for the change of crack and pore parameters. therefore, it offers reliable experiment foundation for detecting crack and pore by seismic wave kinematical characteristics ( such as amplitude, attenuation and main frequency etc. )
通過對人工裂縫和孔洞模型的超聲波實驗研究，可以認為：裂縫密度、方位、張開度和孔洞密度的變化對縱橫波的速度、振幅、衰減（或品質因子q ）和主頻率等參數均有明顯的影響，但裂隙參數的變化對地震波動力學特徵參數（振幅、衰減、主頻率等）的影響遠遠大於對運動學特徵參數（速度等）的影響，這為利用地震波的振幅、衰減和主頻率等屬性參數進行裂縫和孔洞特徵的檢測提供了可靠的實驗基礎。This decrease in the defect pl intensity is probably caused by the increase of the nonradiative tunneling transition with multiphonon emission because of the increase in the density of si dbs
缺陷pl強度的減小可能是因為隨著sidbs密度的增加，與多聲子有關的，從導帶到懸掛鍵的非輻射通道遷移的增加而引起的。( 3 ) process of sbs " generating whose effecting factors include the photo - life in the medium, the shape of pump pulse and the power density was theoretically studied
（ 3 ） 、對sbs產生過程做了理論研究，分析了介質聲子壽命、泵浦脈沖形狀和功率密度等因素對sbs的影響。分享友人