晶體對稱 的英文怎麼說
中文拼音 [jīngtǐduìchèn]
晶體對稱
英文
crystal symmetry-
Then the structure unit of hexangular lattice is found according to the principle of invariable symmetry. renormalization transformation is processed when we regard the structure unit and the growth model as graphs before and after transformation respectively. after choosing the 11 thermodynamic function fugacity as parameter, we can write out the partition functions before and after transformation and the formula of renormalization transformation
然後根據對稱性不變的原則,從整體晶格中選取結構單元,把結構單元和生長模型分別作為重整化變換前、后的圖形來進行重整化變換,選取熱力學函數易逸度為參量,寫出了重整化變換前後的配分函數和重整化變換關系式,求出了這一變換的不動點。Consisting of the protracting graph of hydrogen - like atom ' s angle distributing, computer simulation of the symmetry of molecular orbital and chemical reaction mechanism, showing the molecular point group and symmetry element, computer simulation of molecular vibration, bravias ' s crystal lattice and their transforming, extracting of plane periodic lattice, extracting of solid periodic lattice, close packing of isometrical pellet and the structure of simple mental substance, close packing of unequal pellet and crystal structure of representative ionic crystal, computer simulation of phase analysis by x - ray diffraction
內容包括類氫原子角度分布圖的繪制,分子軌道對稱性和反應機理的微機模擬,分子點群和對稱元素顯示,分子振動運動的微機模擬,布拉維晶格和晶格轉化,平面點陣抽取,立體點陣抽取,等徑網球的密堆積和金屬單質結構,不等徑圓球密堆積和典型離子晶體結構, x射線多晶衍射的微機模擬十個子模塊。Symmetry and matrix representation of octagonal point groups in quasicrystal
準晶體中八方晶系點群的對稱性與矩陣表示Based on the tms320f240 controller produced by ti company, the hardware and software designation of the symmetrical voltage space - vector pwm is presented. designed a digital controller with tms320f240 to modulate the speed of the motor, in which the keyboard and led display are bedded. it can be to set the frequency of motor and display the run frequency of motor in real time
基於ti公司的tms320f240控制晶元,介紹了對稱空間電壓矢量硬體設計和軟體設計,採用tms320f240設計了一款用於電機變頻調速的數字控制器,該控制器上設計有鍵盤和led顯示,可以設定和動態顯示電機運行頻率。In this dinuclear complex, it is worthy of notice that the source of tridentate chelate atoms ( 1n2o ) of ida is different from that of the reported complex
合成過程中,我們還首次得到了與1 , 10 -鄰菲咯啉及亞氨基二乙酸( ida )絡合的銅的不對稱雙核配合物晶體。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。The paper adopts weighing to measure the change of crystal diameter. in growing, the crystal is weighed in an interval t, by right of the relation between diameter and weight, diameter error is figured out
對晶體直徑變化的監測,本文採用上稱重的方法,在晶體生長時,以一定的時間間隔t ,稱取晶體的重量,利用晶體直徑與重量之間的函數關系,計算出直徑的變化量。It is shown that with increasing doped value x, structures of the crystals change its low symmetry into high symmetry and doping with praseodymium can induce larger crystal structure distortion than other elements
發現塊材樣品隨摻雜量x增加,晶體結構由低對稱向高對稱性轉變。通過摻雜pr元素可以引起晶格較大畸變。When the antigen ( brief named ag ) invaded into the organism, and the body can produce a kind of material ( high molecular weight protein, named antibody, brief named ab ) that can distinguish this antigen and evacuate it, the antigen and antibody take place the immuno - reaction. using their highly sensitivity to response mass change and specificity, it can be fabricated a piezoelectric immunnosensors
當異種蛋白(稱為抗原, antigen ,簡稱ag )侵入生物體內時,體內能產生識別此類異物並將其排出的物質(大分子量蛋白質,稱抗體antibody ,簡稱ab ) ,抗原與抗體發生免疫反應,利用抗體(或抗原)對抗原(或抗體)的特異性識別功能和壓電晶體的高靈敏質量響應可製成壓電免疫傳感器。In order to make the sensitivity of 2 - demension accelerometer along the two main arbors almost identical, symmetric four - beam structure that embeds a double - sides interdigitated differential capacitive with puckered beam in two directions was used as sensitive component. in addition, the differential capacitive accelerometer fabricated by bulky silicon micromechanical technique has high sensitivity, wide measurement scope, less nonlinear error, and simple converting circuit. then, the structure parameters of the sensitive component were calculated and stimulated, which results in a set of the optimized structure design parameters, main fabrication procedure and several key fabrication technology
為使二維振動傳感器在兩主軸方向的靈敏度大致相同,敏感元件採用高度對稱的四梁結構,其中每個軸向上均採用帶折疊梁的雙側叉指電容結構,採用體硅微機械工藝製作的高深寬比叉指電容式敏感元件,具有高靈敏度、寬量程、非線性誤差小、外圍電路簡單等優點;對設計的敏感元件結構參數進行了計算,並利用有限元法進行了模擬分析,根據模擬結果得出了優化參數;在確定敏感結構的基礎上,研究了敏感元件採用體硅微機械加工工藝製作的工藝流程和關鍵工藝技術;對敏感晶元內部的c - v介面電路進行了原理設計與分析,利用差動測量技術得到由振動引起的微小電容變化量,經c - v介面電路進行相位調制處理,然後通過解調輸出與加速度成正比的電壓信號。The exportation resistance of a device work device with what link after loading the resistance s the certain connections for should satisfying, in order to prevent mount to load the appearance produce the obvious influence. with each other connect to say to electronics equipments, for example after signal connect the enlarger, ex - class to connect class, only behind first - degree importation resistance before larger than first - degree exportation resistance 5 - 10 times are above, can think the resistance to match good ; connect the box come saying, electronics tube the machine should choose to use with for the enlarger its output to carry the mark to call the resistance the box for, but transistor enlarger then have noing this restrict, can take officing why resistance of equal or approximate box
一件器材的輸出阻抗和所連接的負載阻抗之間所應滿足的某種關系,以免接上負載后對器材本身的工作狀態產生明顯的影響。對電子設備互連來說,例如信號源連放大器,前級連后級,只要后一級的輸入阻抗大於前一級的輸出阻抗5 - 10倍以上,就可認為阻抗匹配良好對于放大器連接音箱來說,電子管機應選用與其輸出端標稱阻抗相等或接近的音箱,而晶體管放大器則無此限制,可以接任何阻抗的音箱。Based on many other circuit formats, a new kind of logic - level circuit representation, called unified middle - level circuit format ( umcf ), is defined in this paper, in which some special operations on circuit related with power estimation and low power design. umcf can not only interchange circuits of different formats, but also convert circuits to hspice acceptable files, which can be used for transistor level power estimation
本文結合多種不同的電路格式,自主定義了一種邏輯級電路的中間表示形式(稱為umcf )和一系列極具特色的與低功耗技術相關的操作,它不但可以實現與其他多種電路格式之間的相互轉換,還可以將電路直接轉換成hspice可以接受的文件,進行晶體管級的電路功耗估計,這樣可以在公認的高精度的功耗模擬器上,對本文的結果進行有效的驗證。Following these two examples of two and three phases, regarding ternary and quarternary metallic melts involving eutectic as melts consisting of three and four non - homogeneuos solutions correspondingly, and using thermo - dynamic parameters of binary metallic melts involving eutectic, calculating models of mass action concentrations for ternary symmetrical melts formed from similar metastable compounds, ternary unsymmetrical melts formed from unsimilar metastable compounds and quarternary metallic melts involving eutectic have been formulated
仿照這兩個二、三相熔體的例子,將含共晶體三、四元金屬熔體看作由3 , 4個溶液組成的非均相熔體,並利用含共晶體二元金屬熔體的有關熱力學參數,針對由同類亞穩態化合物組成的對稱型三元系、不同類型亞穩態化合物組成的非對稱型三元系及四元系含共晶體金屬熔體,制定了相應的作用濃度計算模型。As a liquid, the blue phase shows the 3d - space group symmetry, just like crystals, which arouses people ' s interest
作為一種流體,液晶藍相能像晶體一樣有三維空間群對稱性,這引起了人們的廣泛興趣。Conclusions there can be two or three molecules, even two different compounds in an asymmetrical unit of structure cell because of partial disorder or configuration difference in organic molecule crystals
結論有機分子晶體中由於分子局部無序或構象差異,造成在晶胞的一個不對稱單位中可以存在雙分子、三分子或多分子現象,甚至允許由兩個不同化合物存在。Having developed two theorems in the present thesis on the degeneracy properties of the photonic crystal in the super cell, i can give how the degeneracy will change in the band structure of the photonic crystal corresponds to the change of the translational symmetry of the photonic crystal
為了研究平易對稱性對光子晶體頻帶的影響,我在超包( supercell )中詳細研究了頻帶簡並的變化,並發展了幾個決定這些簡並變化的定理。Then the guided mechanisms of mfs are demonstrated, and waveguide dispersion, leaky loss and effective modal area for both index - induce mf and pbgf are calculated. 2. on the basis of studying fundamental properties of mfs, the birefringence properties of form - induced and stress - induced hibi - mfs are investigated
2 、在基於對微結構光纖基本性質的研究基礎之上,對結構不對稱導致高雙折射光子晶體光纖和應力區導致高雙折射光子晶體光纖的雙折射特性進行了研究。The temperature dependence of stress - induced hibi - pcfs and the effect of lateral forces on form - induced hibi - pcfs are also investigated. the numerical results are in agreement with the reported experimental results
3 、對結構不對稱導致高雙折射光子晶體光纖和應力區導致高雙折射光子晶體光纖的雙折射特性進行了研究。Zinc oxide ( zno ) is a wide band gap ( 3. 4ev ) semiconductor with the hexagonal crystal structure ( wurtzite type ). zno thin films with the c - axis orientation perpendicular to the substrate show excellent piezo - electrical properties and are widely used in piezo - electrical filed. and the dense anjd uniform surface of the films is required when zno thin films are used as integrated functional films
Zno屬於六方晶系6mm點群,晶體在c軸垂直面上的電性和彈性都是對稱的,因而c軸擇優取向的多晶薄膜能夠具有單晶那樣的壓電性和光電性質,而具有平整均勻的表面形貌則是zno薄膜作為一種集成功能薄膜應用性能的保證。Having as many planes as required for complete symmetry in a given crystal system
全面的,全對稱晶形的具有在給定的晶體系統中全面對稱的全部平面的分享友人