从光的电磁理论出发，导出了光在单负材料周期性结构的传输矩阵。
Based on electromagnetic theories, the expression of transfer matrix of periodical structure formed by single-negative materials is deduced.
导出反映晶体结构周期的最小素单胞是正确判断空间群的第一步，其中以还原单胞的选择最为理想。
Deriving the smallest primitive unit cells, necessary to describe the translational periodicity of a crystal structure, is the first step toward choosing the correct space group.
按单自由度刚体弹簧体系求得了气浮结构升沉运动的固有周期，并对气浮结构的动态特性进行了分析。
Simplifying the air floated structure as a single freedom rigid body and spring system, the inherent period of heaving and some kinetic properties are presented.
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