晶體數學 的英文怎麼說

中文拼音 [jīngtǐshǔxué]
晶體數學 英文
crystal mathematics
  • 晶 : Ⅰ形容詞（光亮） brilliant; glittering Ⅱ名詞1. （水晶） quartz; （rock） crystal 2. （晶體） any crystalline substance
  • 體 : 體構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  • 晶體 : [晶體學] crystal; vitrella; crystal body; crystalloid; x-tal
  • 數學 : mathematics
  1. In this paper a lot of experimental data about a - al2o3 crystal with adulterant and zno crystal were acquired by studying the effects of the hydrothermal condition on the synthesized crystal. this paper also will provide guidance for hydrothermal industrialization and researching hydrothermal kinetic process

    本文通過研究合成條件對合成晶體的影響，獲得了大量的有關合成摻雜- al _ 2o _ 3和zno晶體的實驗數據。論文的完成將對進一步完成生產性工藝和探索水熱合成反應動力學過程有重要的指導意義。
  2. In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab

    針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。
  3. Abstract : the effect of correction of self - consistent potential on electronic structure in simple cubic nanocrystal particles is calculated by means of the green ' s function method in the tight - binding approximation, taking only the nearest neighbor matrix elements into account. the numerical results show that the electronic energy spectrum is shifted, the chemical potential is not equal to the atomic energy level, the electronic density at each lattice point is changed, and the variation of electronic density at surface lattice point is the largest

    文摘:在緊束縛近似下，只計及最近鄰的矩陣元，採用格林函數計算了自洽勢修正對簡立方納米晶體顆粒的電子結構的影響，發現電子能譜發生了移動，化學勢不等於格點原子能級，各格點的電子密度也發生了變化，其中以表面格點的電子密度變化最大。
  4. In this paper, the course of isothermal crystallization kinetics of polymer in limited volume unit is simulated by use of the method of monte carlo. four factors influenting on the course of polymer in the limited volume unite isothermal crystallization are analyzed under the given conditions. the four factors are sample volume shrinkage, the change of the linear growth rate of entities g, the change of sample thickness and the change of the number of nuclei

    本文採用montecarlo方法研究了高聚物在有限體積元中的等溫結晶動力學過程，分析了在一定條件下，樣品體積收縮、晶體線生長速率變化、樣品厚度變化和晶核數目變化這四種因素對高聚物在有限體積元中的等溫結晶過程的影響。
  5. 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。
  6. The inperfect crystal structure and its analysis for materials, is an elective course for the master graduate student, which include the crystallology principle, development of crystal diffraction, crystal determination and computer simulation of new phase, analysis of solid solution and superstructure, correction of crystal structure and bondvalent theory, analysis of inperfect crystal structure, analysis of amorphous structure and so on

    材料不完整晶體結構及其分析方法，為材料科學及工程等專業碩士研究生的選修課，內容包括晶體學基礎、晶體衍射技術最新進展、新相晶體結構測定與數值模擬、固溶體與超結構分析、晶體結構修正與價鍵理論、不完整晶體結構分析、非晶結構分析等。
  7. It has many potential applications, including self - adaptive optics, optical computing and optical communications, image processing and real - time holography. in this thesis, we investigate the properties of the phase - conjugate wave produced by the self - pumped in cu : knsbn crystal and by the four - wave mixing in cr : sbn crystal

    光折變晶體具有非常大的非線性光學系數，是一種理想的相位共軛材料，因而被廣泛地應用於自適應光學、光計算、光通訊、圖像處理、實時信息處理等許多方面。
  8. The effects of the fabrication conditions on the crystal structure, grain size, micromorphology and electrochemical performance of these materials have been studied in depth. the reaction mechanism of the low - heating solid - state reaction method has also been investigated. in addition, a novel electrochemical method ( rpg method ) based on the concept of " ratio of potentio - galvano - charge capacity " has been for the first time developed to determine the diffusion coefficient of lithium - ion within insertion - host materials on the basis of the spherical diffusion model

    本論文較系統地考察了低熱固相反應法合成鋰離子電池正極材料的可行性問題，研究了工藝條件對材料的晶體結構、晶粒尺寸、微觀形貌及電化學性能等的影響，探討了低熱固相反應的機理，並通過引進「恆壓-恆流充電容量比」的概念，給出了一種測定鋰離子嵌入脫出固相擴散系數的新方法。
  9. According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

    本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。
  10. The refractive indices at 12 wave lengths in the visible region were measured with the minimum deviation method, showing that kabo is a negative uniaxial optical crystal with moderate birefringence. the measurement of nonlinear optical coefficient dn = 0. 45pm / v

    用最小偏離法測試了可見光區十二個波段處的晶體折射率，結果表明kabo晶體屬負單軸晶，具有適中的雙折射率。晶體的非線性光學性質測試顯示，該晶體非線性光學系數為d _ （ 11 ） = 0 . 45pm / v ，可實現相位匹配。
  11. Theoretically, on the bases of the physical and chemical characters of nonlinear frequency - conversion crystal ktp, the parameters such as walk - off angel, acceptance angle and effective nonlinear coefficients are calculated, analyzed and discussed, together with elaborate analysis to phase - matching process for type ii ktp opo phase - matching

    在晶體的光學性能方面，根據ktp的物理和化學性能，對它的有效非線性系數、走離角和接受角等參數進行了計算、分析和討論。對ii類相位匹配的ktp晶體在參量振蕩過程中的相位匹配進行了詳細的分析和計算。
  12. During the calculation of crystallography, we always need to make some calculation such as vector length, angle between vectors or planes etc. this is a group of scilab functions which can make some common calculation

    晶體學計算過程中經常需要計算矢量長度、矢量夾角等。此scilab工具箱提供了一組適用於任何晶體結構的函數，可以在輸入晶格常數的前提下，計算一些常用的晶體學數據。
  13. At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength

    由於準相位匹配技術有其獨特的優勢，可以利用非線性光學晶體的最大二階極化張量，如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ （ 33 ） ，其有效非線性系數高出普通非線性光學介質（如bbo 、 lbo 、 ktp ）一個數量級，而且可以人為靈活設計調制周期，通過周期設計其頻率變換范圍可以覆蓋準相位匹配介質的整個透明波段，選擇無走離效應，解決了常規pm難以解決的問題，拓寬了非線性晶體的應用范圍，極大地提高了頻率轉換效率，已成為非線性光學材料和固體激光器的研究熱點之一。
  14. With the very low water to cement ratio, rpc has ultra - high strength high ductility and low permeability. in this paper, the compressive strength of rpc can reach to a high point with the number approximately 135mpa. as illustrated from the study results, we can approve some fundamental conclusions : there are big effects on rpc with deferent kinds and properties of raw materials and deferent curing conditions ; stress - strain curve shows the process of destroy with rpc samples ; x - ray diffraction analysis indicates that heat treatment at temperatures 90 accelerate the hydration of rpc sharply, therefore, mechanical and microstructural properties of rpc are highly dependent on heat treatment ; it is believed that rpc materials have excellent resistance to chloride permeability ; during the heat treatment, the shrinkage of rpc developed quickly because of chemical reactions ; the rpc with slag mostly has the advantage of rpc without slag about resistance to solutions corrosion

    研究結果表明：通過對rpc各組分摻量變化的研究，可以找到rpc的最優配合比；試件成型后的熱養護制度對rpc的性能影響巨大； rpc的抗壓應力?應變曲線可以反映出試件受破壞時微裂紋的擴展情況，剛纖維的摻入可以大幅改善rpc的韌性； rpc在成型后存在較大的收縮，而其中的化學收縮要遠遠大於乾燥收縮； rpc具有很強的抗氯離子滲透性能，漿體的密實度很高；通過x射線衍射實驗，可以發現rpc的膠凝體中ch晶體已經幾乎不存在，膠凝體主要由c - s - h凝膠和未水化水泥顆粒組成；在抗溶液侵蝕的實驗中，摻礦渣rpc的抗溶液侵蝕性能在絕大多數情況下要好於不摻礦渣試件，酸、堿溶液和浙江工業大學碩士學位論文摘要一些鹽溶液都會對rpc的結構產生侵蝕作用，但是機理各有不同。
  15. In this paper, pure and doped ktp crystals were grown from the flux using a top - seeded method, and special technique have been used to lower the electrical conductivity to three orders of magnitude than common flux ktp, the values is up to 10 - 10 ( cm ) - 1, this overcame the shortcoming that common flux ktp cannot be used in e - o application field because of having higher electrical conductivity. the growth condition, doped elements and annealing technology were investigated. single crystals of ktp with high quality and big z - cut cross section were obtained by optimizing the parameter of crystal growth

    本實驗採用頂部籽晶熔劑法生長了純的以及不同摻雜的ktp晶體，用特殊工藝處理技術將普通熔劑法ktp的電導率降低了三個數量級，達到了10 ~ （ - 10 ） （ cm ） ~ （ - 1 ） ，解決了普通熔劑法ktp晶體由於離子電導率太大而無法用於電光應用領域的困難；對ktp晶體的生長條件、摻雜元素以及退火工藝等進行了研究，通過優化生長工藝技術參數，突破了工藝技術生長難關，得到了高光學均勻性、具有大z切面的ktp單晶。
  16. With the thermodynamic theories and techniques, it is relatively easy to determine the phase equilibrium data with enough accuracy, however there still exist much more difficulties in crystallization kinetics study even for a simple binary system. that is the reason that nucleation and crystal growth rate are generally represented in form of the empirical expressions. the crystallization kinetic is important for crystallizer design, process control and optimization, and it is strongly depended upon the accurate characterization of process information concerning with multiphase flows and the further disclose of its mechanisms with suitable mathematical models

    熱力學理論和方法已足以獲得準確的相平衡關系；然而即使對于簡單的二元物系的結晶過程，晶核形成和晶體生長動力學的研究仍面臨許多困難，通常採用經驗模型表述，而動力學參數的準確性和可靠性是結晶器放大設計、過程式控制制與優化的關鍵，因此多相流信息的準確表徵、結晶機理的進一步揭示及建立起與之相適應的數學模型有著十分重要的學術研究和實際應用價值。
  17. Furthermore, reaction thermodynamics, reaction mechanism and forming mechanism of crystal were analyzed. the crystal lattice constants of production were also calculated

    此外，對反應熱力學、反應機制、晶體的形成機理等方面進行了理論分析，並計算了部分產物的晶格常數。
  18. Clothing industry has always been one of the most important industries in china ， among china ’ s whole exports ， the clothing export has been holding the important status from this point of view, and on the basis of analyzing the history and current situation of china ’ s clothing industry, this paper points out the advantages of china ’ s clothing export with using the concerned theories of international trade in general ， china ’ s clothing trade is growing steadily ， but along with the intensify of the world clothing industry ’ s competition ， the superiority of china ’ s clothing export is becoming less and less by analyzing the main counterparts of china ’ s clothing trade ， that is the import features and trend of usa 、 eu 、 japan and hong kong ， this paper gives the main problems that china ’ s clothing industry exists at present with designing the system structure for elements of affecting the clothing requirements ， this paper uses ahp, grey 7heory and fuzzy theory to analyze the elements of affecting the clothing export and put them to order according to the degree of importance ， which scientifically proves that the main elements that affect the clothing export are the green trade barriers 、 brands and styles ， etc to counter these elements this paper supplies detailed suggestions on china ' s clothing trade management strategies these suggestions are practidal and operational ， which must have a constructive role on china ’ s clothing industry entering into the world

    本文通過分析中國服裝貿易的主要夥伴，即美國、歐盟、日本和香港的進口特點和趨勢，指出中國服裝行業目前存在的主要問題。通過設計影響服裝需求因素的體系結構，運用層次分析法、灰色模糊理論、模糊數學對影響服裝行業出口的因素進行定量化方法分析排序，科學合理地分析出影響服裝出口的主要因素為綠色貿易壁壘、晶牌和服裝款式等，並針對這些因素詳盡地提出了中國服裝貿易經營戰略的建議。這些戰略性的建議具有可行性和可操作性，必將對中國的服裝行業走向世界起到建設性的作用。
  19. Cadmium germanium arsenide, cdgeas2, has promising advantage for its attractive nonlinear optical properties in all chalcopyrite semiconductors. it has an extremely high nonlinear coefficient, a wide infrared transparency range, but crystal of cdgeas2 has a strong absorption at 5. 5 m which related to a native acceptor - defect

    砷化鍺鎘晶體（ cdgeas2 ）是黃銅礦類半導體晶體中綜合性能最優者，其非線性光學系數和遠紅外區透過率很高，但其在中紅外區5 . 5 m有較強的吸收。
  20. Photomechanics is a science of technique, which is the combination of crystal optics, lodern optics, laser technique, mathematical statistics and digital image processing technique, the data and information of photomechanics are often represented by optical interferometric ringe patterns

    光測力學是綜合物理光學中晶體光學、現代光學、激光技術和數學中統計學及計算機圖像處理技術等多學科交叉結合的技術學科。
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