After a decennium of intensive study,many important aspects of this new class of materi-als and a new kind of ordered state with the so-called“ forbidden”symmetry and quasiperiodicityhave been made clear.
１０年来的系统研究澄清了准晶晶体学中的一些问题，如（１）准晶还是五重孪晶？（２）为什么要有五次旋转对称？（３）为什么会有准周期性？（４）稳定的准晶存在吗？（５）准晶与近似晶体相有什么异同
By using the transfer matrix method,the effects of Braggmirror quasi-periodicity on the photonic crystal defect mode was studied.
利用传输矩阵法研究了Bragg镜的准周期性对光子晶体缺陷模的影响。
It was proposed that the doubly even order magic square transformed image has a quasi-periodicity, of which there is a semi-periodicity.
提出双偶阶幻方变换图像具有准周期性。
Based on the historical climate records of China, the study reveals that quasi periodicity is the basic feature of regional dry-wet climate happening in the eastern part over the past 1000 years; difference in the phase of major periods on dry-wet between the north and south of eastern China is displayed in the time-dependent pattern of rainfall, i.
对中国历史气候记录的研究表明:准周期性是过去1000年间中国东部各区域的干湿气候变化的基本特征;各区域间主要周期变化的位相差异,表现为降水的空间分布格局(如南涝北旱、北涝南旱等分布型)随时间的变化;1000年来干湿气候发生过多次十年和百年尺度的突变,降水的突变对农业生产会有明显影响。
Plane Wave Propagation in One-Dimensional Quasi-periodic phononic Crystals;
一维准周期声子晶体中平面波的传播和局部化
Response between wavelength and angular of transmittance of quasi-periodic 1-D photoniccrystal for different polarizations
准周期光子的透射率对不同偏振态的波长和角度响应
Firstly, acoustic waves propagation in ID quasi-periodic system is studied by means of the transfer matrix method.
首先，研究了声波在一维准周期系统中的传播问题。
A New Method of Quasi-Periodic Signal Processing in Petroleum Engineering
石油工程准周期性振动信号的新处理方法
Study of Characteristics of Transmission Spectra of Quasi-periodic 1D Photonic Crystal
一维准周期光子晶体透射谱特性研究
Non-linear Motion Behavior of Rockmass under Quasiperiodic Driving
准周期外力作用下岩体运动行为的非线性研究
period-and-level start-up control
按周期和基准起动控制
intermediate overhaul [tram]
周期性大修〔电车〕
Research on the Theory and Application of Electro-optic Effect in Quasi-phase-matching Nonlinear Optics Based on Periodically Poled Lithium Niobate;
准位相匹配非线性光学中基于周期极化铌酸锂的电光效应研究
Fabrication and Characteristics of Fibonacci Quasi-periodic Superturcture Fiber Grating
菲波纳契准周期超结构光纤光栅制备与特性研究
Study of Transmission Properties of Quasi-Periodic 1-D Photonic Crystal Containing Left-Handed Materials
含左手材料的一维准周期光子晶体的透射特性研究
Curie Temperature of Periodic and Quasi-periodic Layer Quantum Ising Model
层状周期和准周期量子伊辛模型的居里温度
Transition in the Periodic,quasi-Periodic and chaotic calcium oscillations
周期,准周期和混沌的复杂钙振荡之间的转换
The court grant the company a two - week stay of execution.
法庭准予该公司为期两周的缓期执行。
periodic protein
周期性蛋白[含有周期性重复序列]
To move in or as if in a cycle.
周期地或者好象周期性地运动.
Also Talk about the Existence of Minimal Positive Period in Periodic Function;
也谈周期函数的最小正周期的存在性
periodic and random deviation
周期性和随机性偏离
Different-Order Quasi-Phase Matching Harmonics in Quasiperiodic Ferroelectric Crystals
准周期铁电晶体中不同阶次的准相位匹配谐频
It took us a week to prepare for the mid-term examination.
我们花了一周的时间准备期中考试。
A pulse that ends any time during a reference cycle.
在每个基准周期中随时归零的脉冲。