周期不规则性 meaning in Chinese
cyclic irregularity
cyclical irregularity
Examples
- Deltan heliographers observe an irregularity in the magnetic cycle of the star delta . the shift of the stars magnetic polarity which usually occurs every 12 years has occurred 1 year early
德尔塔日光仪观察到星球德尔塔的磁极周期不规则性变化；该星球每12年移动一次的磁极变化刚刚在一年前发生过。