查询词典 periodic

The decagonal quasicrystal is a two dimentional one and periodic in the third which is parallel to the tenfold axis.

衍射斑点明锐且呈准周期排列，同时具有长程有序，人们称这种新相为准晶。

The main conclusions obtained from the present study are summarized as following:1 An Al-Ni-Rh decagonal quasicrystal with 1.6 nm periodicity, which can be formed as main phase in the rapidly solidified Al75Ni15Rh10 alloy was found and its quasiperiodic and periodic features viewed respectively along the five- and two-fold axes were revealed by HREM.

利用能量计算、高分辨观察像以及高分辨像模拟计算结合的方法确定了复杂结构合金相ξ\'-和ξ-Al-Ni-Rh中缺陷的结构，并且讨论了电子束对复杂合金相的影响。

Article 25 For repayment of external debt in the form of deferred payments, debtors subject to periodic registration shall go through the procedure stipulated in Article 23 of these rules.

第二十五条延期付款项下债务到期后，实行定期登记的债务人应当按照本细则第二十三条的规定办理偿还手续

Through the process of learning this chapter ,learn impurities in the water hazard on the boiler, understand the principles of sodium ion-exchange softening and water degasification, grasp the effects of continuous sewage and periodic sewage.

通过本章学习。了解水中杂质对锅炉的危害。理解钠离子交换软化和水的除气原理，掌握锅炉连续排污和定期排污的作用。

We also give two other kinds of further general- izations: one is to the case of hyperbolic-type degenerate lower dimensional tori in Hamiltonian systems, and the other one is to the case where the Hamiltonian has time-dependent quasi-periodic perturbation.

在第三章中，我们利用法向双曲不变流形理论和尤建功的一个定理的光滑性表述，给出了一个同时具有法向频率和法向分量的推广的KAM定理。

This is a special state of condensed matter with long-range order that is neither three-dimensionally periodic nor quasicrystalline, but nevertheless possessing a higher degree of organization and higher symmetry than the individual crystals constituting the MTPs.

SEM-EDS分析得到所观察到的二十面体构形的颗粒的成分比B/O是6.4；另外一种四面体结构则有B/O为2，其相应的化学式是B〓O。

Therefore, the existence of periodic solutions for the Hamiltonian system and its equivalent differential delay equation is established.

从而建立哈密顿系统以及与之等价的时滞微分方程的周期解的存在性定理。

In chapter two, we study the periodic solutions of Lotka-Volterra equation with infinite delay.

引言简要地阐述所研究题目的历史背景与价值并分析国内外研究现状

The existence of periodic solutions of a neutral integro-differential equation with infinite delay was studied.

摘要本文考虑具无穷时滞中立型积分微分方程周期解的存在性。

Priori bounds are established for periodic solutions of a high order Rayleigh Equation with delay.

本文首先建立了一类具时滞高阶Rayleigh方程的周期解的先验有界性。

Some of them were ligated to the plasmid vector pCR 2.1 andsequenced,respectively.

将所获DNA片段克隆到pCR2.1载体进行测序，并与基因组数据库进行同源性比较。

Thinking since Google owns Blogger, I would be able to escalate this issue to the support team.

自谷歌的思考拥有Blogger的，我将能够缓解这一问题的支持团队。