能通量密度 的英文怎麼說
中文拼音 [néngtōngliángmìdù]
能通量密度
英文
energy flux density-
The high - power semiconductor quantum well ( qw ) laser is a kind of luminescence device with superior performance, it has longe - lived, low threshold current density, high efficiency, high luminosity and excellent monochromatic, coherence, directionality, etc. the high - power semiconductor laser is widely applied to the fields, such as military, industrial machining, communication, information processing, medical treatment, etc. the material ' s epitaxy is the foundation of the whole laser ' s fabricating, and it has important influence on the optics and electricity performance about the laser
大功率半導體量子阱激光器是一種性能優越的發光器件，具有壽命長、閾值電流密度低、效率高、亮度高以及良好的單色性、相干性、方向性等特點，廣泛應用於軍事、工業加工、通信及信息處理、醫療保健等領域。材料的外延生長是整個激光器器件製作的基礎，對器件的光學和電學性能有著重要的影響，生長不出優質的材料體系，獲得高性能的器件就無從談起，因此，材料的外延生長便成為了整個半導體激光器製作過程之中的重中之重。The study conducted research on the following four fields : firstly, the characteristics of the interfacial polymerization system of piperazine aqueous solution / trimesoyl hexane solution were systematically investigated. the results show that at a certain molar ratio between the two monomers, piperazine and trimesoyl, at the two phase interface, a dense functional layer of ultra low pressure, high permeating flux and high salt rejection formed by controlling the time of interfacial polymerization, such as the composite membrane ( i ), the concentration in water phase is 0. 4 %, and 0. 1 % in organic phase, and the polymerization time is 1 minute
本文主要進行了四個方面的研究，首先系統分析和研究了哌嗪水溶液均苯三甲酰氯正己烷溶液界面聚合體系特徵、界面聚合反應中各影響因素對膜性能的影響等，結果發現，當界面處兩相單體（哌嗪和酰氯）分子摩爾比為某一比值時，通過控制界面聚合時間（有機相處理時間） ，可以形成超低壓高通量高脫鹽的緻密功能層，如復合膜（ ） ，水相濃度為0 . 4 ，有機相濃度為0 . 1 ，聚合時間1min 。The aa interaction which we take is in good agreement with the experimental ground binding energy of t he. the a. a potentials reproducing the experimental value of ba ( a / fe ) are obtained by folding the density distribution of the a particle and ajv local potentials which give a very good fit to the a - proton scattering data
） ?勢是通過選取（ ? ） -質子散射的實驗值數據較好的（ ? ） -核子定域勢、以4he核的密度分佈作折疊積分得到； -勢符合低能-散射實驗及sbe的基態共振能量。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。By performing fourier transformation, the relationship between the turbulent intensity of the particle and that of the carrier fluid was obtained which makes clear that particle size, specific gravity, velocity gradient, and the characteristic frequency of energy - containing eddies are four basic influencing parameters. it is proven theoretically that under certain conditions, the stream - wise and transverse particle turbulent intensities exceed those of the carrier fluid. based on the equations of two - phase flow, the presence of fine sediment suspension is shown to attenuate the turbulent intensity of the water
通過對細小顆粒在剪切流場中運動方程的fourier分析，得到了顆粒脈動強度和流體脈動強度之間的定量關系，表明顆粒粒徑、顆粒密度、流速梯度以及紊動場含能旋渦的特徵頻率是影響顆粒脈動強度的主要因素，首次從理論上證明了在一定條件下，顆粒在縱、垂向的脈動強度均會超過相應的流體脈動強度，為已有的實測資料提供了合理的解釋。With the numerical solution, an internal condensation critical curve can be calculated out by condensation theory and depositing theory, on the curve, the enter water ability equal to the out water ability, which can be used as the basis to determine the occurrence of internal condensation. but the result doesn ’ t coincide with the real completely. in this dissertation, we plan to get the critical curve by practical experiment results, because that the enter water ability only relates to the condensation density and the out water ability only relate to the volume ratio of the pneumatics system
然而由凝結理論和沉積理論得到的計算結果往往與實際有一定偏差，本課題希望通過實驗的方法獲得內部結露臨界線，即系統進水能力和排水能力相等的曲線，由於系統的進水能力和充放氣過程中凝結水滴密度有關，排水能力和系統容積比有關，可以通過大量實驗總結出以凝結水滴密度和容積比表示的內部結露臨界曲線，作為判別內部結露是否發生的依據。Sichuan lands in the west of our country, pass through for the west of our country, expressway general development is stated, reach the west china traffic major problem of building existence : traffic facility amount serious is below, density passes low, traffic demand product is exceptional ; traffic facility overall quality is low ; technical standard is not high ; traffic facility disease is serious ; it is weak to fight calamity ability ; traffic structuralness contradictory very outstanding, big medium or small proportion structure is not reasonable ; traffic technical structure is not enough perfected ; traffic regional structure do not let reasonable etc.
四川地處我國西部，通過對我國西部高速公路發展的概述，得出了西部交通建設存在的主要問題:交通設施總量嚴重不足，密度過低;交通需求缺口過大;交通設施總體質量過低，技術標準不高;交通設施病害嚴重，抗災能力薄弱;交通結構性矛盾十分突出，大中小型比例結構不合理;交通技術結構不夠完善;交通區域結構不盡合理等。造成這些現象的原因何在，筆者從我國近年來公路建設的政策背景出發，得出的結論主要是建設資金缺口過大。那麼，四川省高速公路建設中存在的問題又是什麼We also studied the dynamic characteristics of cf / cu ( c ) - cu composites, the results show that, by the method of graphite is coated with copper, the coefficient of friction and the wear rates remarkably decreased. with the increase of the copper coated carbon fiber content, the wear rates of cf / cu ( c ) - cu composites is notably decreased, while the coefficient of friction is increased. with the increase of electric current density, the wear rate of cf / cu ( c ) - cu composites is increased
研究發現，碳纖維鍍銅石墨-銅復合材料的電摩擦磨損性能與碳纖維含量存在一最佳值，當碳纖維含量為0 . 6時，其電摩擦磨損性能最好；對于不同電流密度下的電磨損性能的比較可以發現，通電磨損時的電摩擦系數要小於機械磨損時的摩擦系數，碳纖維鍍銅石墨-銅復合材料的電摩擦系數隨電流密度增大先減小而後增大，在電流密度為15a cm ~ 2時達到最小值；通電磨損量要遠大於機械磨損量，且隨著電流密度增大，磨損量增加。Then, the effect of heavily doped boron on ig of czochralski silicon was also investigated. it is found that no dz ( denuded zones ) were observed in the hb samples subjected to high one - step temperature, ramping annealing respectively. for conventional high - low - high three - step ig annealing, the dz becomes narrower and bmd density is higher in hb samples than that in lb samples, as a result of hb enhancing oxygen precipitation
結果顯示，單步高溫熱處理時重摻硼樣品不能形成潔凈區；降溫退火中，降溫速度較為緩慢（ 3 / min ）時能生成一定量的氧沉澱，但沒有潔凈區形成；普通高?低?高三步熱處理過程中，形成明顯的潔凈區，但相對輕摻樣品而言，潔凈區較窄，氧沉澱密度明顯偏高，說明重摻硼樣品吸雜能力強。In the section of fabricating technology, i first discuss the ion beam technology. through the analysis of the effects of each parameter on the surface smoothness, profile fidelity and linewidth resolution in the process of ion etching, the suitable angle of incident ion beam, ion energy, density of ion beam and time of etching are selected combining the actual status of the mask
在製作工藝的研究方面，首先研究了離子束刻蝕技術，通過對離子束刻蝕過程中各個參數對刻蝕元件的表面光潔度、輪廓保真度和線寬分辨的影響分析，結合掩膜的實際情況選擇出了合適的離子束入射角、離子能量、束流密度和刻蝕時間等參數。( 1 ) the posterior distribution of the coefficient matrix, the precision matrix and covariance matrix, and their bayesian estimation under the matrix normal - wishart conjugate prior distribution. ( 2 ) the deduction of the predictive distribution, proved to be matrix t distribution. ( 3 ) the designs of bayesian multivariate mean value control charts in terms of the relationship between the multivariate wishart distribution and x2 distribution, the bayesian process capability index and its confidence lower limi
通過多方程模型系統的統計結構，證明了矩陣正態? wishart先驗分佈是模型參數（ ， ）的共軛先驗分佈，研究了該先驗分佈下模型系數矩陣、精度陣和協方差陣的后驗分佈及其貝葉斯估計，對模型預報密度函數進行了嚴格的數學推導，並將其應用於多元質量控制領域，構造了貝葉斯均值向量聯合控制圖；結合wishart分佈與x ~ 2分佈之間的關系，設計與推斷了貝葉斯多指標過程能力指數及其貝葉斯置信下限。Based upon the analysis of the data obtained during the survey, it can be concluded that : 1 ) the number of biomass of macrobenthos in the yellow sea and the east china sea in autuma is higher than that in spring, while the number of density of macrobenthos in autumn is lower than that in spring ; 2 ) the number of biomass of macrobenthos in the yellow sea is higher than that in the east china sea ; 3 ) the number of species in the yellow sea is lower than that in the east china sea ; 4 ) one of the characteristics of distribution of macrobenthos in the east china sea is that the species richness increased from the coastal waters to the offshore deep waters, from the north to the south. 5 ) the species composition in the deeper part occupied by the cold water mass of the yellow sea is more stable than that in the coastal part of the yellow sea in the late 40 ~ 50 years
通過以上幾方面的分析，結果表明： 1 ）黃東海調查海域的秋季總生物量均高於春季，總棲息密度則低於早春季； 2 ）黃東海春季生物多樣性指數高於秋季； 3 ）南黃海、東海的水文特點顯著不同：東海底溫顯著高於南黃海底溫，東海底鹽亦高於南黃海底鹽； 4 ）南黃海春秋季生物量分佈無一致規律，東海春秋季生物量除長江口外基本上自近岸向外海逐步降低； 5 ）東海大陸架大型底棲動物的種類組成較南黃海更豐富； 6 ）東海大型底棲動物的分佈特點之一為：種類數由北向南、由近岸（西部）向外海（東部）逐漸增多； 7 ）在黃海冷水團控制的海域，其底棲動物種類組成較近岸海域穩定； 8 ）幾個生物多樣性指數各有側重，都能較好地反映底棲動物的分佈特點Based on analyse of parameters which used to evaluate laser beam quality at present and according to the main properties which influence on laser manufacturing, beam focus characteristics parameter is put forward as the stander parameter to evaluate beam quality, because the foundmental advantage of laser beam applied in industral field is that laser beam can achieve high energy intensity through focusing
論文在總結目前存在的評價激光光束質量參數的基礎上，根據對影響激光製造的主要光束特性參數的分析，以光束空間特性為核心，提出用光束聚焦特徵參數值作為評價激光光束質量的參數。因為激光作為能源能夠在工業領域廣泛應用的根本優勢就在於它可以通過聚焦獲得極高的能量密度，而值恰恰表徵了實際光束的可聚焦能力。The relationships between the laser performance index, such as laser power densities, pulse energy and energy densities, and the diameter of holes have been set up, and a experience formula between the energy density and the diameter of holes has been established by the regression method, based on the experiment results
在此基礎上，本文對微噴帶激光打孔機的性能進行了試驗研究，得到了激光功率密度、激光脈沖能量和激光能量密度對打孔孔徑的影響關系。通過數據回歸的方法，建立了激光能量密度與孔徑之間的半經驗公式。Nano - sacle coo is apt to dissolve in the electrode homogeneously, and better conductive net of coooh come into being, thus contribute a lot to the procedure of the activation. the electrode with nano - scale coo and cnts shows higher discharge voltage and higher discharge capacity. nano - scale additives can improve the specific capacity of the electrode, the volume specific capacity and the mass specific capacity of the electrode with nano - scale coo are 784mah / cm3 and 224mah / g, respectively
結果表明：添加劑為納米coo的電極的活化性能最好，納米coo相對于普通coo能更加均勻的分佈在鎳電極內，也更易溶解、反應生成coooh導電網路，從而加快了鎳電極的活化進程；添迦納米coo和添加cnts的極片具有較高的放電電位和較大的放電容量，納米添加劑能有效提高鎳正極活性物質的放電效率和利用率；納米添加劑可以有效地提高鎳正極片的容量密度，其中添迦納米coo的極片體積容量密度達到784mah cm ~ 3 ，質量容量密度達到224mah g ；添加cnts的極片體積容量密度達到778mah cm ~ 3 ，質量容量密度達到223mah g 。Lerr is obtained through tracing the variety of elastic energy density of each element and recording the maximal fluctuation when brittle failure happens during numerical calculation
該指標的實現是通過在數值計算中追蹤每個單元彈性能量密度變化的全過程，記錄單元發生脆性破壞前後的彈性能密度差值，得到單位體積巖體突然釋放的彈性能量。The second aspect : from qgp kinetic equations with collision integrals, by using the relaxation time approximation, we calculate the distribution functions to the second order correction. we obtain the distribution functions for quarks ( and anti - quarks ) and gluons under perturbation of the fluctuation of the color field. then in the high - temperature - low - density area, we discuss the characteristics of the distribution functions, and use t hem to get the net baryon density and the energy density
第二，從有碰撞項的qgp動力論方程出發，忽略自旋，在色漲落擾動下，利用弛豫時間近似，得到夸克和膠子分佈函數的二級修正，通過數值分析重點討論了高溫低密情況下qgp中成分粒子分佈函數的特性，並且由分佈函數得到凈重子數密度和能量密度。Finally, the results are compared with periodic and random chains. then we studied acoustic wave propagation in 1d quasiperiodic and aperiodic systems by means of he transfer matrix. transmission rate, reflection rate, energy flow, logarithmic energy flow, energy density and lyapunov exponent are computed numerically, and compared with periodic and random system
其次研究了聲波在幾種一維準周期和非周期系統中的傳播，通過轉移矩陣的方法，數值地得到了系統的傳播系數t _ n 、反射系數r _ n 、能流密度j _ n ，能量密度e _ n和lyapunov指數，給出了以上各量與傳播長度n以及頻率之間的關系，同時發現能流及能量密度都具有分形結構，並與周期和隨機系統的結果作了比較。Firstly, acoustic waves propagation in id quasi - periodic system is studied by means of the transfer matrix method. the transmission rate, reflection rate, energy flow, logarithmic energy flow, energy density and lyapunov exponent are obtained numerically. we explain all these parameters " relations with frequency and the size of system, and compare these p arameters with those o f periodic system. we find that these parameters are fractal in this quasi - period system
通過轉移矩陣的方法，數值地得到了系統的傳播系數t _ n 、反射系數r _ n ，能流密度j _ n 、能量密度e _ n 、李雅譜諾大指數_ n ，給出了以上各量與系統大小n以及頻率之間的關系，發現這些量存在著與周期系統不同的準周期性質，其能量會出現局域化現象，能流以及能量密度都具有分形結構，給出了相應的理論解釋。The experimental evidences indicated that three deposition parameters, i. e., energy density of laser, rf plasma power and substrate negative bias played key roles in the growth of the c - bn films at room temperature. on this basis, the explanation of formation process and mechanism of c - bn film was given
通過分析各個沉積參數在薄膜生長中的作用，證明三個沉積參數：激光能量密度、射頻功率和基底負偏壓是室溫下生長立方氮化硼薄膜的關鍵因素，並在此基礎上初步解釋了立方氮化硼薄膜的形成過程及機理。分享友人