中子源密度 的英文怎麼說
中文拼音 [zhōngziyuánmìdù]
中子源密度
英文
neutron source density-
Our results show that with the up to date experimental data, 13c can not sufficiently burn, the neutron number density decrease, the timescale of neutron source become long and these come into conflict with model of thermal pulse agb star
研究結果表明，在新實驗結果下， 』 3c不能充分燃燒，中子數密度降低，中子源持續的時標變長，這與熱脈沖agb星的現有模型出現矛盾。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。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。4 in order to make. the decision adjust to the practice, and use the limited water resources more rationally. a multi - objective fuzzy decision method for irrigation district is presented considering fuzzy connection, then a method is given to get the changeable objective weight of each stage. this model can solve the decision in conjunctive use of ground and surface water
4 、為合理利用水資源，使渠井結合灌區的地表、地下水聯合調度決策與實際結合更緊密，本文在陳守煜建立的多指標模糊關系優選決策理論基礎上，提出了考慮時段指標變權重的多指標模糊關系優選決策方法，模型中各指標的權重隨作物所處生長階段的不同發生變化，並將模型與演算法應用於實際例子中，取得了較為滿意的結果。By film thickness measured, fourier transformed infrared spectrometer ( ftir ) analysis, x - ray photoelectron spectroscopy ( xps ) analysis and relative irradiance measurement, the effect of microwave input powers on deposition rates, f / c ratios, bonding configurations of ct - c : f films and the radicals in plasma originating from source gases dissociation is analyzed
由於微波功率的改變會導致等離子體中電子溫度和等離子體密度發生變化，從而造成不同的源氣體分解過程，結果微波功率的升高導致了薄膜沉積速率的提高、 f / c比的降低，同時也導致薄膜中cf和cf _ 3基團密度的降低，而保持cf _ 2基團密度接近常數。In this thesis, we have mainly studied the characteristics of chf3, c6h6 and cf4 electron cyclotron resonance ( ecr ) plasma using langmuir probe and optical emission spectroscopy ( oes ). the relative concentration of different radicals in chf3 plasma and the effect of chf3 / c6h6 ratio on bond configuration of a - c : f films were discussed. it was showed that h, f, c2 were the main radicals among radicals of h, f, c2, ch and f2 in chf3 ecr plasma
重點研究了chf _ 3 、 cf _ 4和chf _ 3 c _ 6h _ 6放電等離子體中基團的分佈；分析了不同基團的相對密度隨宏觀放電條件（微波輸入功率、放電氣壓、源氣體流量比）的變化規律；探討了等離子體中各種基團的生成途徑；在不同源氣體流量比的條件下沉積了a - c ： f薄膜並通過傅立葉變化紅外吸收光譜（ ftir ）的測量得到了薄膜中鍵結構的信息；分析了a - c ： f薄膜的沉積速率及其鍵結構與等離子體空間基團分佈狀態之間的關聯。The extremely high density of deposited energy of gev heavy ion can be reached with mev cluster beams. under this conditions new phenomena should be discovered
利用mev量級能量的團簇束即可達到gev重原子離子在物質中的能量沉積密度，在這種條件下，載能團簇與物質作用將成為豐富新現象的源泉。More recently, dr. rosanne di stefano also from the harvard - smithsonian centre for astrophysics and i used the chandra x - ray observatory to detect objects dubbed " quasisoft " x - ray sources in nearby galaxies because of their low temperatures, which are at most four million degrees celsius. that is well below the temperatures expected for " hard " x - ray sources such as neutron stars or stellar mass black holes - which run between 10 million and 100 million degrees celsius - and still hotter than " soft " x - ray sources like white dwarfs
最近羅珊迪史提芬路博士她亦來自哈佛大學史密森天體物理中心和筆者利用錢德拉射線天文臺在鄰近星系偵測到一種奇怪的-射線源，我們稱之為類軟射線源，因為它們的溫度最高只有攝氏400萬度，遠低於一般硬射線源，例如中子星和恆星型黑洞溫度介乎攝氏1千萬至1億度，卻又比軟射線源例如白矮星為高。The thesis analyzed the effects, associated with the propagation of laser in plasma channel, such as diffraction, plasma defocusing, the third - order intensity - dependent nonlinearity, the relativistic self - focusing, the focusing and defocusing of the plasma channel, and the absorbtion in the collision plasma and the finite pulse length effect
文中用哈密頓-雅可比方程方法和源展開方法分別對激光在等離子體隧道中傳輸所涉及的衍射效應、等離子體散焦效應、三階強度非線性、相對論自聚焦、等離子體隧道的聚焦和散焦效應、碰撞等離子體中的吸收效應、有限脈寬效應等等做了基本的闡述。The spd model is made by the ins titute of geographical sciences and natural resources research of chinese academy of sciences. it combines social economic factors, such as city and transportation foundational facilities, with nature factors, for example the digital elevation model ( dem ) and net primary productivity ( npp ) of plants to simulate the spatial distribution of population density of china by the advanced grid generation technology
中國模擬人口密度模型是由中國科學院地理科學與資源研究所首先提出的，這個模型試圖利用先進的格網生成技術，將城市、交通基礎設施等社會經濟因子和陸地數字高程（ dem ） 、陸地植被凈第一性生產力（ npp ）等自然因子相結合，通過模型的反演，模擬某一時期的中國人口密度空間分佈狀況。There is a part of beam loss during the course as the neutralization of high - energy particles dragged from the ion source, the deflexion of charged particle on the beam stream and the scraped beam of exceeding beam waist and low density. it is necessary to analyze the beam loss and bring forward a rational project for absorbing beam stream
將離子源引出的高能粒子進行中性化，再偏轉掉束流中的帶電粒子，將超過束腰半徑、密度較小的束流削除，在此過程中有一部分束流損失，它直接影響加熱功率的因素，因此，對束流損失進行了分析，對損失束流的吸收提出了吸收方案。The assembly process and experimental results are included in this paper. in order to increase the power density of the module, a three - dimensional fc - ipem package structure is introduced. a half - bridge fc - ipem module is built in the lab with bga power devices and flip - chip technique
為實現更高的功率密度，本文把微電子行業中廣泛應用的倒裝晶元技術應用於模塊電源研究中，完成了一個半橋fc - ipem （ flipchip - integratedpowerelectronicsmodule ）模塊。With numerical calculations, the influences of device structure, material parameters and operating conditions on the distributions of the equipotential line, current density, carrier concentration, optical field and temperature profiles have been investigated, and the interactions between the correlative characteristics have been studied at the same time
通過對這些相互關聯的特性進行數值計算，分析了器件結構、材料參數和工作條件等對等勢線分佈、注入有源區的電流密度、有源區中的載流子濃度、光場強度以及溫度分佈的影響，並研究了這些特性之間的相互影響。Above all, this part gives an overview to the latest papers on the core capability research. secondly, on the basis of the overview, this part selects 16 variables to establish the whole evaluate system from the angle of capital scale, market power, making - profit capability, financing capability, risk - controlling capability, creative capability, quality of the financial statement and industry focus. at last, by using factoring and focus method, this part studies the core capability of chinese stockjobbers on the basis of 2002 data released by the csrc
首先在資源、能力和環境三個維度上，本部分就有關企業核心競爭力研究的最新文獻進行了回顧和分類;其次，在文獻研究基礎上，緊密結合中國證券公司運營的實踐，本部分分別從資本規模、市場勢力、盈利能力、融資能力、風險管理能力、創新能力、會計信息質量、產業集聚等8個方面，選取16個指標構建了中國證券公司核心競爭力的評價體系;最後，基於中國證監會所做的有關統計數據，通過運用因子分析和聚類分析的方法，對中國證券公司的核心競爭力狀況進行了分析和評價。分享友人