周期

The results show that the change of modulation period and modulation depth affect the period of soliton interaction and the difference of relative amplitude barely affects period of soliton interaction. In particular the lattice soliton interaction is effectively avoided by opposite phase soliton.

结果表明：调制周期和调制深度的变化影响了格子孤子相互作用的周期大小，而相对振幅的差异对孤子相互作用的周期影响较小，特别是反相孤子能够有效控制格子孤子的相互作用。

Disclosed is a leaky-wave dual polarized slot type antenna, including: first and second feeding circuit sections comprised of N-first strip lines and N-second strip lines with a loop every first period along the X-axis on the first dielectric layer and a second period along the Y-axis, in which the N-first strip lines and the N-second strip lines are parallel to each other being alternate, and each length of Ls1 and Ls2 for the first period satisfies the equation of , first and second multi-channel dividers formed at once and the other sides of the first dielectric layer, to connect the N-first strip lines and the N-second strip lines parallel with each other; and first and second central ports formed in the opposite direction of the cavity, each of the feeding circuit sections being connected to the first and second multi-channel dividers; and first and second slot sections being formed by patterning the second shielding layer, in which M-first and M-second slots are arrayed along the direction of the X-axis and each of the first and second slots forms N-row first and N-row second slot arrays, respectively, which cross the first and second strip lines for each, the first slot and the second slot being orthogonal to each other.

公开了一种漏泄波双偏振槽型天线，包括：第一和第二馈电回路部分，其具有沿着X轴在第一介电层每第一周期以及沿着Y轴的第二周期形成具有环路的N第一带状线和N第二带状线，其中N第一带状线和N第二带状线彼此平行并交替，并且对第一周期的各Ls1和Ls2的长度满足等式，第一和第二多通道分配器寻形成在第一介电层的一侧和另外一侧上，以连接彼此平行的N第一带状线和N第二带状线；以及形成在腔的相对方向中的第一和第二中心端口，每个馈电回路部分连接到第一和第二多通道分配器；以及第一和第二槽部分，所述第一和第二槽部分通过对第二屏蔽层形成模式而形成，其中M第一和M第二槽沿着X轴的方向安置，各第一和第二槽分别形成N行第一和N行第二槽阵列，其对每个横过第一和第二带状线，第一槽和第二槽彼此正交。

Look of your menstrual cycle is longer, if it is within 28 days of the menstrual cycle, in the next period on the 14 days before the countdown, then that is on the 21st day of ovulation is your day, can be arranged makelove in 19,21 , 23, three on the line, if you are 29 days of the cycle, that is, on the 18th day of ovulation, to such a method, not necessarily very accurate, because sometimes ovulation will be affected by many factors, such as: mood, work stress and environmental change, food and drugs, there will be advanced or delayed, so the general recommendation in the ovulation period ovulation test strip under the combination could be more accurate to seize the day of ovulation.

要看下你的月经周期是多长了，如果是28天的月经周期，在下次月经日倒数的14天前，那么也就是21号这天是你的排卵日，可安排makelove在19、21、23号，三次就行，如果你是29天的周期，就是18号的排卵日，以此种方法计算，并不一定很准确，因为排卵有时会受很多因素的影响，比如：心情、工作压力、环境改变、食用药物等，会出现提前或推后，所以一般建议在排卵期里结合下排卵试纸会能更准确的抓住排卵日。

A model for finding the cryptic period of hydrological time series is proposed. The functions of the model include to apply logarithm transformation for making the sequence more stationary, to construct a corresponding auto-regression model for reducing the herteroskedasticity of residual, to determine the component of the prime period by periodogram analysis.

本文在讨论水文时序平稳性和异方差性的基础上，提出了检测水文时序隐含周期的模型，即对水文时序设计对数变换序列，提高序列的平稳性；建立相应的自回归模型降低残差的异方差性；通过对所得平稳序列进行周期图分析确定可能的主周期分量。

Model for finding the cryptic period of hydrological time series is proposed. The functions of the model include to apply logarithm transformation for making the sequence more stationary, to construct a corresponding auto-regression model for reducing the herteroskedasticity of residual, to determine the component of the prime period by periodogram analysis.

bstract 本文在讨论水文时序平稳性和异方差性的基础上，提出了检测水文时序隐含周期的模型，即对水文时序设计对数变换序列，提高序列的平稳性；建立相应的自回归模型降低残差的异方差性；通过对所得平稳序列进行周期图分析确定可能的主周期分量。

Results show that dominant periods of relief variation can be derived by periodogram more obviously and easily than by harmonics analysis,while harmonics analysis can obtain relief variation simulation models as well as its periods.

相比较而言，周期图分析可以更加直观地得到满足显著性检验的分布周期，但谐波分析还可以根据周期检验结果，得到对应的谐波模型。

The results of system responses show that routes to chaos from period doubling or triple and quasi periodic.

系统通向混沌的道路是周期3、倍周期分叉和拟周期运动演化为混沌运动。

The influence on the system performance by the sample time interval is also discussed.

分析了采样周期对系统性能的影响，通过实验最终确定系统采样周期和控制周期均为5ms。

The vibro-impact systems are familiar with the non-smooth dynamic systems.The dynamics research of the vibro-impact systems not only is significant in theory but also has practical values in engineering.Firstly,using the Poincaré map method,we get an existent criterion of single impact period-n motion in a two-degree-of-freedom vibro-impact system with damper.It is shown that our conclusions are valid through the numerical simulations.Moreover,the satiability of periodic motions is studied and the correspon...

基于Poincaré映射的方法，通过解析的方法导出了一类具有阻尼的两自由度碰撞振动系统的单碰周期n次谐运动存在性判据，经过数值模拟验证了理论分析的正确性，并给出了分析其稳定性的判别公式，通过数值模拟，讨论系统的局部分岔与全局分岔，同时比较了系统参数变化对其周期运动的影响，发现在强阻尼、弱激励、小质量比、较大恢复系数下系统将会出现较多的有规律的周期碰撞。

Then, one class of second-order semilinear differential systems with two parameters is considered.

第五章，用锥上的Deimling不动点定理分别讨论了依赖于参数的一阶中立型泛函微分方程和一阶中立型泛函微分系统，导出了一阶中立型泛函微分方程以及一阶中立型泛函微分系统存在两个正周期解，存在一个正周期解以及不存在正周期解的充分条件。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失