查询词典 periodicity

The year trend of cotton aphid could be simulated with a three cubed polynomial. Furthermore, Cotton's year periodicity could be divided into two periodicities, front 55 d first periodicity, the other latter 128 d, and a new periodicity's function was also given with new phase angle.

棉蚜种群数量的趋势性曲线可以用一个多项式来拟合；棉蚜的在一年之内的周期可以分为两段：前55d可看作一个周期，后128d可看作一个周期，并根据周期相角重新给出棉蚜种群数量的周期函数。

It is clearly shown that the Al-Ni-Rh decagonal quasicrystal with 1.6 nm periodicity contains a kind of atom columnar cluster with about 1.6 nm periodicity as the most fundamental structural building block.

主要的研究结果可以总结如下：1利用高分辨电子显微技术在Al_(75)Ni_(15)Rh_(10)合金中发现了1.6 nm周期的十次准晶，报道了这种准晶在二次轴方向及在十次轴方向的高分辨结构，阐述了其周期及其准周期的排列方式。

With perturbation shifting circumferentially step by step, the subsonic flows around slender bodies of revolution vary gradually in manner of single periodicity,while the supersonic flows vary gradually in manner of double periodicity.

由于临界周向位置的存在，随微小扰动沿周向逐渐移动，细长旋成体大攻角亚音速绕流呈现为"单周期、连续变化"规律，而超音速绕流则呈现为"双周期、连续变化"规律。

Fod AR5395 the variation of peak flux Fx of soft X-ray exhibits a periodicity about 24.3 hours, the periodicity for the occurrence rate Nx of X-ray flares is about 12.2 houds, and the area Sx of sunspot groups varies with 24.4 hours period.

观测资料分析表明，AR5395活动区演化具有周期性的特征，软X射线峰值流量F变化周期为24.3小时，X射线耀斑出现率N_x，具有12.2小时的周期性，活动区黑子群面积S_x的变化呈现24.4小时的周期。

The equivalent definition of the minimal strong component is given, and it discusses the relation between the standard form and the minimal strong component in the paper. Consequently, the theory is proved that the periodicity of a fuzzy matrix is the least common multiple of periodicity of its minimal strong component.

给出了极小强支的等价定义，讨论了模糊矩阵的标准型与极小强支关系，从而得到了模糊矩阵周期是极小强支周期的最小公倍数的定理。

The results show that the displacement of rock body may change direction in regulative distortion phase, the displacement presents periodicity according to the storing and the destroy of the energy of rock distortion, the quantity of displacement of the top is more than that of the bottom, the quantity of displacement and the destroy periodicity of the reinforced terrane infused plasm are less than that of the irreinforced terrane infused plasm, the convergence of bordroom is the displacement of certain thickness wall rock of surface layer.

得出：岩体在调整变形阶段可能改变位移方向，岩石破坏呈现周期性，洞室边墙上部比边墙脚位移大；注浆加固后的岩层比未加固岩层的位移小，破坏周期短；洞室的收敛只是表层一定厚度的围岩位移的外在表现，收敛层外岩体向山体方向移动；加固破碎围岩的关键技术是按照工程所处应力场，充分考虑加固层周围地质构造影响，设计加固层的厚度和加固闭合拱。

The pattern of lunar cycle can be classified into three strategies:(1) Planulation of S. hystrix and P. damicornis showed clear lunar periodicity and the peak of larval release shifted with different months. The peak of planulation occurred around the full moon in winter then shifted gradually to the first quarter moon phase in summer. The phase shift of larval release may be related to the seasonal variation of seawater temperature and the sudden temperature drops caused by upwelling.(2) Planulation of S. pistillata showed clear lunar periodicity and the peak of larval release occurred around the full moon.

在月周期方面可分成三种生殖策略：(1)尖枝列孔珊瑚与细枝鹿角珊瑚释放幼生不但有明显的月周期，而且释放幼生的高峰会随著月份而移动，由冬季至夏季期间，高峰从满月前后转变至上弦月前后；再由夏季至冬季期间，高峰从上弦月前后转变至满月前后，而此变动形成一个完整的年周期，原因可能与海水温度影响配子发育和胚胎速度与夏季期间涌升流所造成的降温有关。

Get two algorithm which mine partial periodicity patterns in time series and one algorithm which mimes asynchronous periodicity in time series.

本文主要建立了多粒度时态数据的表示和部分周期模式模型，获得了两个挖掘多粒度时态数据的部分周期算法，1 个异步周期算法，实验表面了所提出的挖掘算法对于发现周期是有效的。

Compared to other models pointed out by foreign scholars, my model was characteristic of multiple periods during evolution of urban systems, complexities of the course of forming urban systems, multiple types of urban functions, periodicity of regional changes of the important regions of urban development, periodicity of dominances of inland central city and seaport gateway city.

此后，随着海疆由开启转为封闭，再由封闭转为开启，最大城市由青岛转为济南，再由济南转为青岛；中心地职能体系由&青岛单中心体系&转换为&青岛、济南双中心体系&，再转换为&青岛单中心体系&；工业发展重点区域也由沿海转向内陆，再由内陆转向沿海；口岸城市的门户职能强度也经历了增强、减弱、增强的不对称&U&型变动；城市体系的空间结构经历了碎化—整合—碎化的过程。

The results show that a the variation of annual mean runoff of Huayuankou section exist an intrinsic dynamic mechanism, which is the results of joint action of affecting factor of periodicity and non-periodicity, having obvious chaos characteristic; b the correlation dimension of attractor of phase space is 5.09 and saturation inserted dimension is 14. It shows that to establish a mathematical model of the annual mean runoff system of Huayuankou at least requires 6 independent variables and the required saturation inserted dimension for rebuilding phase space is 14; c the steady estimate of Kolmogorov entropy is 0.14, showing the average predictable time of the annual mean runoff variation of Huayuankou is about 7 years and; d using nonlinear deterministic chaos model is more suitable to describe the variation of annual mean runoff of Huayuankou.

结果表明：①花园口年平均径流量变化存在着内在动力学机制，是由周期性和非周期性影响因子共同作用的结果，具有明显的混沌特性；②相空间吸引子的关联维为5.09，饱和嵌入维数为14，这说明要建立花园口年平均径流系统的数学模型，至少需要6个独立变量，重构相空间所需要的饱和嵌入维数为14；③Kolmogorov熵的稳定估计为0.14，说明花园口年平均径流量变化的平均可预报时间大约为7年；④用非线性确定性的混沌模型比完全的随机模型更适于描述黄河花园口年平均径流量的变化。

Great. What repertoire did you see?

太棒了。你看的是什么剧目？

I prepared not to accept such ridiculousness:"Please," I said to him.

我可不想理会这套荒谬的东西："请你通情达理一点儿。"