突变频率 mutation frequency
- 针对两种模型进行仿真,表明该方法能够较为精确与快速地跟踪电网频率,尤其针对突变频率的信号,具有较好的跟踪效果;同时算法克服了同步采样条件的限制,通过迭代,在不同初始频率下均具有较好的收敛性。
Simulations with respect to two models, prove that the method can track the frequency accurately and instantly, and have the preferable effectiveness on the abruptly fluctuating-frequency power signals, at the same time, this method overcomes the constraint of synchronous sampling and has the better astringency with different initial frequency. - 熟知BRCA1和BRCA2基因突变可引起乳癌和卵巢癌,不过在普通人群中突变的频率还没有很好地描述。
Mutations in the BRCA1 and BRCA2 genes are known to lead to breast and oarian cancer. Howeer, the frequency of these mutations in the general population has not been well-characterized. - 单纤维分析显示轴突变性和再生频率增加,并且过度髓鞘不规则。
Teased fiber analysis showed an increased frequency of axonal degeneration and regeneration as well as excessive myelin irregularity.
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