The data of polar motion, rotationof the earth and atmospheric excitation function are analysed by the Auto-Regression power spectrum method, and their spectra at low frequency band are obtained.
本文用自回归功率谱方法分析了极移、地球自转和大气激发函数的资料，得到了它们的低频谱。
2
The effect ofrotation on te and TM mode band gaps and absolute band gap is investigated.
讨论了三种旋转操作对TE, TM模式带隙及完全光子禁带的影响。
3
The tensile displacement and angle ofrotationof tensile strain localized band are analyzed in strain softening stage and in real crack propagation stage based on gradient-dependent plasticity.