针对这些现状，本文设计了基于周期变异免疫克隆优化的压电悬臂梁控制算法。
According to these situations, a new immune clonal algorithm based on the probability of cyclic mutation of piezoelectric cantilever beam is designed in the paper.
采用传统的自然变异繁殖方法育种周期长，效果又不明显。
Natural variation is one of the traditional reproduce methods, not only its breeding cycle is too long, but also produces little effect.
与常规育种相比，航天诱变育种具有诱变频率高、变异幅度大、育种周期短、有利突变体多等特点。
As compared with the conversational breeding, spaceflight mutation breeding is of high mutagenesis frequency, wide variation extent, short breeding period and more elite mutants, etc.
采用变异率指标与谐波分析法研究了1978-2000年水产品年度收购价格波动的周期性。
The fluctuation circle of aquatic products price between 1978 and 2000 via ratio of variation and harmonic wave was researched.
我们模拟随机的周期时间，得到平均值以及变异数。
We simulate the stochastic cycle time and get its mean and variance.
人们认为这种梯度变异可能是降水量，温度也许还有光周期等地理趋势造成的结果。
The cline is considered the probable result of geographic trends in precipitation, temperature, and perhaps also photoperiod.
目的研究立位心脏R- R间期信号的非稳定周期轨道的结构，进一步探讨心率变异（HRV）的动力学特征。
Objective To study structure of the unstable periodic orbits (UPOs) of R-R interval signals of heart during orthostatic standing, and to reveal the dynamic characters of heart rate variability (HRV).
计算各组变异系数、标准差、极差、均数95%可信区间，比较连续3个心动周期与5个心动周期的参数测量值。
The standard deviation, range, variation coefficient, 95% confidence interval were analyzed, the average values of 3 cycles were compared with those of 5 cycles.
语言模因在模仿、复制和传播的过程中具有模仿的选择性、复制的周期性和传播的变异性特点。
During the process of imitation, copy and spreading, linguistic memes embody the following characteristics: the selectivity of imitation, the periodicity of copy and the variability of spreading.
抗原的存在可能与细胞周期或细胞群体的变异性有关。
It is very possible that the existence of the antigen may be involved in the cell cycle and the variability of cell population.
而在病理条件下心率变异性小，呈周期性趋势。
It means that the HRV is greater in control conditions than in abnormal conditions.
对光周期反应敏感的亚热带自交系CML312表现异常，基本营养生长期指标在自交系内及其F1内变异较大；
The performance of the basic vegetative stage in the CML312 line with sensitivity to photoperiod is abnormal with higher CV within the line and F1.
语言模因具有模仿的选择性、复制的周期性以及传播的变异性等特点。
Linguistic meme has the characteristics of the selectivity of imitation, the periodicity of copy and the variability of spreading.
但是小麦条锈菌毒性变异频繁，可以通过变异产生新的毒性小种，导致小麦品种抗病基因失效，引起小麦条锈病周期性流行危害。
However, the virulence of wheat strip rust varied frequently and produced new virulent RACES which led to the breakdown of resistance genes and the periodical prevalence of wheat strip rust.
但是小麦条锈菌毒性变异频繁，可以通过变异产生新的毒性小种，导致小麦品种抗病基因失效，引起小麦条锈病周期性流行危害。
However, the virulence of wheat strip rust varied frequently and produced new virulent RACES which led to the breakdown of resistance genes and the periodical prevalence of wheat strip rust.
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