lattice symmetry 中文意思是什麼
lattice symmetry
解釋
點陣對稱-
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。 -
It consists of several parts as follows : in the first part, after an introduction of basic theory and history of filter banks, an analysis of lattice structure filter banks is given. the requirements of perfect reconstruction and linear phase are discussed and some constrains of filter length and symmetry property are analyzed in details. besides, relative designing practice and examples are given
論文的工作主要有如下幾個部分：第一部分，我們介紹了子帶濾波器組的基本理論和發展情況，研究了格型結構濾波器組，討論了其完全重構條件和實現線性相位的要求，並詳細分析了在實現完全重構線性相位格型濾波器組時濾波器的長度和對稱性約束，討論了優化設計的方法，並給出了例子。 -
In the selection of kadanoff cells a new idea is given, i. e., not only the symmetry of lattice before and after selection must be kept unchanged, but also the coordination number must be kept unchanged
在kadanoff集團的選取上本文提出了一個新觀點，即不但要保持選取前和選取后晶格的對稱性不變，還要保持格點的配位數不變。 -
So a hypothesis is proposed, i. e., as long as the symmetry and coordination number are kept unchanged the critical behavior of any two - dimensional lattice is same by this method. that indicate those two - dimensional lattices belong to the same universal class
所以本文還提出假設，只要是保持對稱性和配位數不變，用這種方法計算出的任何二維晶格的臨界行為都是相同的，這表明它們是同一普適類。
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