频率突变 glitch 波霎 (旋转中子星) 的自转週期，突然发生改变的现象。
... 自转突变 频率突增 一闪信号 假信号 glitch 频率突变 frequency discontinuity (热点)：突变或者重组频率显著增加的位点。 Hotspot ...
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并对相位突变和频率突变的情况进行了仿真研究，说明在相位和频率发生变动时三相锁相环仍能有效地锁定相位，能够满足系统变频的要求。
The simulation results prove that the three-phase phase-locked loop can work well in disturbance situation and variable frequency system when the frequency of the inputs is variable.
随着新等位基因在每个群体中独立突变产生，它们在许多遗传位点上的等位基因频率逐渐变得越来越不同。
Their allele frequencies at numerous genetic loci gradually become more and more different as new alleles independently arise by mutation in each population.
这些突变的发生频率之高令人惊讶，但真正的问题在于，即使在发生这些情况之后，常规的预测方法也意识不到。
These breaks happen with alarming frequency, but the real problem is that conventional forecasting approaches do not recognise them even after they have happened.
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