查询词典 periodic

Example The periodic function shown in the Fig. is known as a half-wave rectified sine wave. Find the trigonometric Fourier series of the function f.

角频率为横坐标，每个正弦分量(直流分量相当于频率为零的正弦量)的大小为离散的纵坐标值

Trace function. periodic sequence. trinomial property. correlation.Hamming correlation. linear complexity.

迹函数，周期序列，三项式特性，相关函数，Hamming相关函数，线性复杂度

The new kiln was so successful that a decision was made to remove the existing tunnel kiln, which had become too expensive to operate, and replace it with another new periodic kiln.

新的窑炉卓有成效，所以Mason决定换掉现有成本过大而不宜于再使用的隧道窑，取而代之的是另一条新的间歇窑。

OBJECTIVE: To introduce a algorithm for detecting TWA using Poincare mapping method, which is a technique for dynamics systems to display periodic behavior.

目的：介绍一种利用非线性动力学系统表示周期性的散点图法从而进行T波交替检测的算法。

It is applied to sorts of locomotive engine , In course of revolving of Crank and Connecting Rod Mechanism, there are revolving of the crankshaft , swinging of the connecting rod and reciprocating motion, so its motion state is complex, and periodic unbalanced force, by a few components, is great.

曲柄连杆机构在高速运转过程中，有曲轴的转动、连杆的摆动及活塞的往复运动，其运动状态复杂，各个部件所产生的周期性不平衡惯性力大，是引起发动机振动的主要原因。

Secondly, we dealt with the existence of periodic solutions and unboundedness of solutions of Lienard eqautions.

另一方面，本项目研究了Lienard方程周期解的存在性与解的无界性。

Physics The increase in amplitude of oscillation of an electric or mechanical system exposed to a periodic force whose frequency is equal or very close to the natural undamped frequency of the system.

磁共振：受周期力作用的电动或机械系统的振荡幅度的增加，该周期力的频率等于或非常接近系统固有的不减弱的频率

The 〓～t curve of UF with periodic back flush can be divided into two sections: the initial section represents the accumulation stage of undetachable cake layer, and the final section represents the equilibrium stage of accumulation and detachment of cake layer.

对周期反冲洗膜污染过程分析结果表明，周期反冲洗超滤〓～t曲线可分为两段：起初的直线增长段为不可逆滤饼层的累积阶段，直线的斜率为各次反冲洗不可逆膜阻增量△R；后期的水平段为滤饼层累积与剥离达到平衡的阶段。

By means of the undetermined coefficient method ,which is submitted in reference for solving nonlinear wave equations for their peaked soliton solutions ,three kinds of peaked soliton solutions are obtained for two important nonlinear wave equations— Korteweg-de Vries equation and Benjamin-Bona-Mahonyequation,respectively. One kind of peaked compacton solution ,which has the characteristics of both peaked soliton solution and compacton solution ,is obtained for above two equations with the aid of transformation relation between triangle function and hyperbolic function,. By use of above solutions, two kinds of periodic peaked traveling wave solutions are constructed.

摘 要：利用文献中提出的求非线性波方程尖峰孤子解的方法，分别求解了两个重要的非线性波方程—Korteweg-de Vries 方程和Benjamin-Bona-Mahony BBM）方程，得到了3类尖峰孤子解；借助双曲函数与三角函数间的变换关系得到了1类尖峰紧孤子解，该型解兼有尖峰孤子解和紧孤子解的特点；在上述结果的基础上构造了2个周期性的尖峰行波解。

The cycle undulatory theory tell us that there is certain periodicity in economical development. This kind of periodic performance almost simultaneously expands for the many economic activity, then universal declines, contracts and recovers, thus influend economy development.

周期波动理论认为经济发展存在周期性，这种周期性表现为很多经济活动差不多同时扩张、继之以普遍的衰退、收缩与复苏，从而影响经济的发展；而景气理论则是在周期波动理论的基础上，构建景气指数来监测宏观经济受经济周期波动的影响。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。