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The thermopower of decagonal AlCuCo quasicrystal was measured in the periodic and quasiperiodic direction by laser heating alternating current measurement method in the temperature range of from 300 K to 1200 K.

采用激光交流加热的方法测量了D相AlCuCo准晶周期与准周期两个方向的热电势，温度测量区间为300—1200 K。

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。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。