特殊用法conditional periodicity1.有条件周期性crisis periodicity1.(资本主义)危机[恐慌]周期endogenous periodicity1.内源周期性environmental periodicity1.环境周期性hidden periodicity1.潜周期性long periodicity1.长周期性long-range periodicity1.远程周期性lunar periodicity1.月周期性microfilaria periodicity1.微丝蚴周期性seasonal periodicity1.季节周期periodicity of frequency wobbling1.频率飘动周期periodicity of a pseudorandom sequence1.伪随机序列的周期性periodicity of structure1.(晶体)结构的周期性