周期性地

Perseid meteor shower is an annual fixed July 17 to August 24 during that time, it is not only quantity, but almost never in the absence of the Star in the summer before, is the most suitable non-professional meteor observers of the meteor shower, status column throughout the year the first three periodic meteor showers.

英仙座流星雨每年固定在7月17日到8月24日这段时间出现，它不但数量多，而且几乎从来没有在夏季星空中缺席过，是最适合非专业流星观测者的流星雨，地位列全年三大周期性流星雨之首。

The non-uniform algebraic codebook is determined by the non-uniform statistical properties of the algebraic codebook, and the part-searching-area is determined by the periodicity of the algebraic codebook excitation vector, which makes up the insufficient numbers of signed pulses in algebraic codebook at low bit rate.

非均匀代数码书由代数码书的脉冲非均匀统计特性确定，部分搜索域代数码书则由代数码书矢量的周期性确定，该方法有效地弥补了低比特率情况下代数码书中脉冲数不足的缺点。

When ultra-light materials with periodic micro-structures are manufactured and applied in engineering,there always exist stochastic variations in matrix materials,topology and size of microstructures,etc.

具有周期性胞元的超轻质材料在制造和应用过程中，不可避免地会出现基体材料、微结构拓扑和尺寸的随机性变化。

This paper systematically researched this sort of nonuniformly sampled signals'digital spectrum structure, signal-to-noise ratio , the response of D/A converter with nonuniformly sampled signals, the algorithm for estimating timing offsets, the relationship between the discrete time expression of the total energy and the continuous time expression, the estimation of the average power, the algorithm of recovery and application in designing and analyzing the digital waveform synthesizer.

本文全面系统地研究了这类周期性非均匀采样信号的数字谱结构，信噪比表达式，数模转换器对非均匀采样信号输入的响应，误差校正算法，时域与频域的能量对应关系，对功率测量的影响，内插恢复算法，以及在设计和分析数字波形合成器中的应用。

Comparision of the monthly value of ΔC20,ΔC30,ΔC40m,ΔC50 estimated from CHAMP GPS data over one year shows periodic vibration. That is, computing gravity field recovery error in low degree zonal harmonics can effectively present the temporal variation.

求得两部份低阶地谐系数差值ΔC20，ΔC30，ΔC40，ΔC50的变化值，四张图形趋势都约略呈现周期性变化，也就是说从CHAMP低轨卫星资料计算重力，的确可以看出重力球谐系数的时间变化。

FastNet takes DHRLM as routing model, it implements a diffluent multi-point distribution algorithm like Bittorrent, but FastNet is different from Bittorrent which is an unstructured P2P system, it implements the idea according to the characteristics of resource locating algorithm in structured P2P network. Moreover FastNet adopts periodic fault-tolerant algorithm to ensure active, quick and reliable distribution of security-related content.

FastNet以DHRLM为路由模型，实现了类似于Bittorrent的多点分流内容分发算法，与Bittorrent不同的是，FastNet在结构化的P2P网络中根据定位算法的特点实现了该算法：同时，FastNet采取了周期性的容错算法保证在P2P节点动态失效的情况下仍然能够主动、快速、可靠地分发安全内容。

Partial least-square regressive can give the most expositive elements to establish the forecasting model . Combined with proportion method , it can reflect the seasonal change factors causing the variation of electricity consumption , which makes the forecasting of monthly electricity consumption more accurate .

偏最小二乘方法能够提取若干对系统具有最佳解释能力的综合变量来建立预测模型，该方法与比重法结合应用于月售电量的预测之中，能更好地体现引起月售电量变化的平稳因素，季节突变因素的周期性，使得月售电量的预测更加准确。

Chinese demand for raw materials of all sorts is growing so fast and creating such a bonanza for farmers, miners and oilmen that phrases such as "bull market" or "cyclical expansion" do not seem to do it justice. Instead, bankers have coined a new word: supercycle.

中国对各种各样原材料的需求增长得如此之快，这让农业生产者、矿主和石油业者赚得盆满钵溢，以至于用&牛市&和&周期性高涨&之类的措词似乎都无法准确地表达，银行家们为此创造了一个新词：超级周期。

Meanwhile, the swimming mode are periodic movement, tension and relaxation there is an alternative rhythm to cross, often this before, muscles will become soft, resilient and flexible.

同时，游泳属于周期性的运动方式，紧张和松弛有节律地交相替代，常此以往，肌肉便会变得柔软、坚韧而富于弹性。

Uncertainty,long cyclicity and comprehensivization - these characteristics of the subject determines that if we want to get out of the predicament,...

根据语文学科不确定性、长周期性和综合性等特点，要想走出困境，就必须建立&以写为主线&的语文教学整体改革框架，建立从小学到高中各阶段训练体系，并在大纲、教材、教学安排、考试等方面也要相应地进行改革

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了