In the weak field scheme,the full energy matrices are derived for d4,bions configuration in the trigonal symmetry in terms of Racah s irreducible tensor operator method, with the help of VAX-Ⅱ computer and based on the method of full diagonalizing, the D groundstate final splitting of antiferromagnetic FeCO3 is successfully explained.
在弱场图象下，利用Ｒａｃａｈ不可约张量算符法得到了三角对称ｄ４，５电子组态的完全能量矩阵。
In this text the method of near field image is used to measure the geometric parameter of optical fibre automatically.
本文利用近场图像法对光纤几何参数进行自动测量。