1·There are many helixes of dihedral Angle, and the whole skeleton forms a large helix in the structure of the rotatory isomer.
其结构中包含许多二面角螺旋，而且具有旋光性的异构体，其结构的整体骨架也构成一个大的螺旋。
2·In this paper, some relations of the invariants concerning the simplex and its tangent point simplex, are given and then, an inequality for the dihedral angles of a simplex is also presented.
本文首先给出单形的不变量和它的切点单形的不变量之间的若干关系式，然后再给出一个关于单形二面角的不等式。
3·Through the analysis of EIA, a modified computational method is given, which can analyze a dihedral corner reflector with arbitrary shape of planes and with shadow objects.
通过对等效照明面积的分析，给出了能计算任意平面形状、有遮挡效应的二面角反射器后向雷达散射截面的工程方法。
4·In terms of FFDP and velocity aberration compensation theory, a new method of using dihedral Angle offset for compensating velocity aberration in large observation range is put forward.
根据远场衍射模式和速差补偿理论，提出了一种在较大观测范围内二面角速差补偿方法。
5·The dihedral corner reflector with wing and fuselage joint of aircraft is a very strong electromagnetic source in a wide angular range.
飞行器翼身接合部构成的二面角反射器是很强的电磁散射源。