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1)  quasiperiodically forced circle map
准周期强迫园映象
1.
The infinite set of dimensions Dq, singularity of strength α(q) and the fractional dimension f(α) oftwo-frequency quasiperiodic attractor in the quasiperiodically forced circle map are numerically calculated, andthe corresponding figures are given.
用数值计算方法计算了准周期强迫园映象中两频率准周期吸引子的无穷多维数Dq、奇性强度α(q)与α的点集维数f(α)值,并给出了相应的图线。
2)  quasiperiodically forced oscillator
准周期受迫振子
3)  obsessive-compulsive phenomenon
强迫现象
1.
Objective: To explore obsessive-compulsive phenomenon in primary school students, andthe relation with parental rearing patterns.
目的:初中生强迫现象的现状进行调查,并对父母教养方式对强迫现象的影响进行探讨。
4)  quasiperiodcally forced circle-map
准周期驱动圆映射
1.
The scalling law between the torus doubling bifurcation number p and the forcing strength ε of quasiperiodcally forced circle-map is presented.
研究了准周期驱动圆映射的倍环面分岔数p与驱动强度ε之间的标度关系,并详细讨论了系统参数对环面分岔的影响,获得了准周期驱动圆映射的倍环面分岔机制。
5)  periodic map
周期映射
1.
A qualitative analysis of a nonlinear equation of d2x/dt2 = - (sinx - α sin2x) is shown, its various or-bit graphs and properties of the periodic map in closed orbits are proved.
通过对非线性方程d~2x/dt~2=-(sinx-sin2x)的定性分析,得出其各种轨道图形及闭轨的周期映射性质。
2.
The study of monotonicity of periodic map has some relations with the weeakened Hilbert 16-thproblem.
本文证明了系统 x+α· x+β· xn=0 (α>0 ,β≠ 0 ,n 2 )的周期映射是单调
3.
Let M be a closed, connected and smooth-m-dmensional manifold with m≥2, f: M→M be a periodic map with period N≥2, P={x∈M| fr(x) = x, 1≤r<N},In this paper we generalize Halpern s theorem by proving the following theorems.
设M是闭的、连通的、光滑的m维流形,m≥2,f:M→M是周期为N≥2的周期映射,P={x∈M|f~r(x)=x,对某个r,1≤r
6)  image enhancement
映象增强
补充资料:准周期性晶体
分子式:
CAS号:

性质:平均结构具三维平均周期,但实际不具有严谨三维周期性的晶体。此中主要有无公度与调幅这两种因素对晶体平均周期进行微扰,无公度结构指晶体中存在二套或二套以上的亚(点阵)结构,亚结构周期虽相近,但有微小差异,调幅结构指晶体周期受调幅的作用在乎均周期附近作微小的大小大小…周而复始的变化的一类结构,无公度与调幅结构的衍射图中,在反映平均结构的主衍射点之外还会呈现卫星衍射点。γ-Na2CO3即是一种具无公度调幅结构的准周期性晶体。

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