space-group symmetry 中文意思是什麼
space-group symmetry
解釋
空間群對稱-
The conclusions are reported as following : the structure change of triuranium octaoxide ( u3o8 ) was studied by xrd at ambient atmosphere at temperature form 25 to 850. there are two kind of phases of u3o8 in the temperature range studied, and the transformation temperature is about 300. the low temperature phase is orthorhombic with space group amm2, and it change to another phase with better symmetry around 300
主要的研究結果如下：對u _ 3o _ 8的相變和結構隨溫度的變化進行的分析研究結果顯示：在300附近u _ 3o _ 8發生了相變，由底心正交結構（空間群為amm2 ）的低溫相轉變為簡單六方結構（空間群為p - 62m ）的高溫相。 -
Hi the aspect of symmetry analyzing to the hopfield model neural network with hebbian learning, we study on the dynamical behavior of the state space under the action of isometric transformation group g = z2 ? n, and prove the invariant property of the energy orientation ? / / " ) of the state space under the action of g. we find that the symmetry relationship of the network is sx - sw = sh when the active function of the neuron is odd, where sx is the symmetry of the patterns set x under hebbian learning rule, sh is the symmetry of the network and sw is the symmetry of the weight matrix w of the network
） s _ n為手段，研究了網路狀態空間在群g作用下各點的運動情況，證明了群g作用下的不變性。證明了當神經元的激活函數f為奇函數時， hebb法則下存儲樣本集x的對稱性s _ x 、網路對稱性s _ h以及連接矩陣對稱性s _ w三者之間滿足s _ x = s _ w = s _ h的關系；同時，我們還證明了：網路穩定態集vf同一s _ h軌道中的兩個穩定態的動力學行為（能量和吸引域大小）相同；兩個等距網路h和h 1 = g ? h ， （ ? ） g （ -
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。 -
During recent 30 years, the blue phase of liquid crystal has attracted much attention. the physical nature of bpi ( the first subphase of blue phase ) and bpii ( the second subphase of blue phase ) have the symmetry of space group
近30年來，液晶藍相受到廣泛的關注，研究表明藍相一相（ bp ）和藍相二相（ bp ）的物理性質有空間群對稱性。
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