band-symmetry 中文意思是什麼
band-symmetry
解釋
能帶對稱-
In each case, we present the surface band structure together with the projected bulk band of both ideal and reconstruction surface respectively, the number of the surface states is determined, and the localized surface features and orbital properties of this surface states along the high symmetry lines in the 2d sbz are discussed
根據電子數目規則，我們斷定處在一o . lev ~ 0 . lev的表面態為全部填滿的陰離子懸掛鍵態或者為原子再構后引起的as一asdimer鍵態，而處在1 . 4ev一1 . 6ev的表面態為陽離子空的懸掛鍵態。 -
On the assumption of ignoring the distortion of thickness, this paper determines the rough shape by the geometric modeling method of equal area developing using mixed mesh cell of triangle and quadrangle for the first time, presents the equal area developing arithmetic of quadrangle - triangle. on the virtual geometric symmetry axis, we puts forward the method of determining the developed coordinate of the point on the base band in the development of using regular quadrangle cell, determines the developed shape of internal structure in plane utilizing point - to - point mapping theory. furthermore, we realize the approximate developing of undeveloped - irregular boundary surface using a few triangle cells
本文結合型號研製中小曲率機翼整體壁板類零件坯料展開課題，基於板料厚向變形忽略不計的先驗假設，首創混合四邊形-三角形網格等面積展開的幾何模擬法確定壁板類零件毛坯外形，給出了混合四邊形-三角形網格等面積展開演算法；提出了虛擬分割線的概念，採用虛擬幾何對稱軸，給出了規整四邊形單元展開基帶上結點的計算方法；採用映射原理和求交演算法確定了壁板內部結構信息的展開定位。 -
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。
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