n.非周期性(非调谐性)
A residency is aperiod of hospital training for medical school graduates. 一段实习期是指允许医学研究生在医院培训实习的时间。
aperiodicity of this kind of decline and sex of the corresponding period, crisis degree is small, economy of phenomenon of duration short; 这种衰退无周期性和同期性 ,危机程度轻 ,持续时间短 ;
Aperiodicity energy 非周期能量
aperiodicity stretch 非周期性延伸
