准周期的

This clearly indicates that the negative value of dρ/dT in CdYb QCs is mainly due to the quasiperiodicity because these QCs are stoichiomeric compounds with a very narrow single phase range. Positive dρ/dT and anomalously large MR reported previously are found to be due to the existence of free Cd in the samples.

这清楚地显示CdYb准晶的负电阻温度系数是由於准周期导致，因为CdYb准晶是一种单一相范围极窄的当量化合物，以前的研究说其具有正的dρ/dT和异常巨大的磁阻是由於样品中含有金属Cd。

A theoretical description of the deformed state of QCs requires a combined consideration of interrelated phonon and phason field. The phonon field describes the motion of lattices in physical space, while the phason field describes the quasiperiodic arrangement of atoms in the complementary orthogonal space, which interact with one another. Owing to the existence of phason field, the elasticity of QCs is more complex than that of the conventional crystals.

准晶弹性的刻画不仅需要描写晶格振动的声子场，还需要刻画原子准周期排列的相位子场，而且二者是相互耦合的，所以准晶的弹性较经典的一般晶体的弹性复杂的多。

The fundamental response of a nonlinear nonautonomous system is periodic ,quasi- periodic and chaotic motion.

对于非线性非自治系统的响应主要有周期、准周期和混沌几种状态。

This paper investigates the orbits of sub-harmonic and chaos in power system under periodic and quasi-periodic perturbation .

研究了电力系统在周期和准周期扰动下的次谐和混沌轨道。

The electric potential oscillation including periodic oscillation,quasi- periodic oscillation and turbid oscillation of carbon steel/H2SO4＋ K2Cr2O7/Pt system has been studied.

刘靖研究了碳钢/H2SO4+K2Cr2O7/Pt体系中的电位振荡现象，如周期振荡、准周期振荡和混沌振荡等，并对其振荡机理进行了初步分析和讨论。

Diurnal and semidiurnal quasi-harmonic terms are included in the Scheme Ⅱ.

方案Ⅱ则包含长周期、全日、半日周期的准调和项18项。

Results show that there are multi-time scale periodic variations in AOI, the temperature and precipitation in Northwest China with significant syntonic periods of qausi-3 a between AOI and the precipitation, while the multi-time scale correlations between AOI and the temperature are quasi-2 a, 3-5 a and about 8-11 a with the strongest coherency in 8-11 a syntonic period. The influence of AO on temperature is more remarkable than that on precipitation in Northwest China for the interaction of their interdecada1 variation.

结果表明，AOI、西北地区降水和气温变化都存在着不同尺度的周期振荡，西北地区降水与AOI之间存在准3 a尺度的显著共振周期，而AOI与西北地区气温变化的多时间尺度相关表现为准2a、3~5 a和8~11 a左右的显著相关振荡且以8~11 a共振周期的凝聚性最强；AO对西北地区气温变化的影响比对降水的影响更显著，与其年代际尺度的相互作用有关。

First, some seismotectonic belts in southeast and northeast Qinghai-Tibet Plateau which have similar geodynamic background are selected.

本文从地震地质学角度出发，充分利用地震学和岩石力学等学科中的相关研究理论和方法，将地震活动与具体的地震构造相结合，探讨了包含多个孕震区或断裂带的大陆板内地区的地震复发规律，提出了大陆板内地震的准周期丛集复发模式，并系统、全面的研究和讨论了不同断裂之间的相互作用及其对活动断裂地震危险性的影响，从机理上揭示了大陆板内地震准周期丛集复发行为的内在物理基础。

The hyperchaotic attractors along with chaotic, periodic and quasi-periodic attractors of these systems were obtained from circuit simulations.

电路仿真获得了这类系统的超混沌吸引子及混沌、周期和准周期吸引子。

As the results suggest that, during the period of 1800～2005, the 82-year and 48-year quasi-periodic components are available for the secular variation of dipole magnetic field, which are not directly related to the periodicity of the length-of-day variation.

结果表明，1800～2005年期间，偶极子磁场长期变化有82年和48年准周期分量，它们与日长变化的周期没有直接关系。

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。