周期性地

The discipline of influenza activity in Changsha is significant, and it shows seasonal nature and periodicity. The vary trend of ILI% can explain the activities of local' influenza much better. The level of ILI% is on its two fastigiums while the activities of influenza virus are just on theirs. The A H1N1 influenza has much more influence to seasonal influenza activities, and the prevention and control emphasis of A H1N1 influenza should be enhanced hereafter.

长沙市流感活动的规律较为明显，存在季节性和周期性；ILI%的变化能够较好地反映当地流感病毒的活动情况，流感病毒活动的两个高峰时期当地的ILI%水平也处于高峰时期；甲型H1N1流感病毒对季节性流感病毒的活动影响较大，今后一段时间内防控的重点应放在甲型H1N1流感的防控中。

It is disadvantageous to stability of lunar rover.The frequency of wheel wave is a function of velocity of wheel motor, dimension of wheel,density of grousers and wheel slide.

车轮在垂直地面上的周期波动和前进速度的波动对于月球车来说是一个周期性的激励，其频率应与月球车系统的固有频率避开，防止月球车前进时产尘较大的振动。

To more easily conceptualize and embody the learning in these stages of the cycle, they are set into a picture model of four cardinal, seasonal, and elemental directions, and an adaptation of Angeles Arrien's Forue-fold Path, and Ron Kurta' Sensitivity Cycle Barriers, as illustrated on the fold-out map at the beginning of each section of the book.

为了更容易地对这一循环中这些阶段的学习形成概念，并把这一学习过程具体化，我们插入了一个图片模型（这个模型是由四个主要的、周期性的基本方向组成的），及《Angeles Arrien's Forue-fold Path》的修订本和Ron Kurta的《灵敏度周期障碍》，如同这本书每一部分开始的插图一样。

The results show that, periodic regeneration effect of dark solitons stably exists in the distributed system.

结果表明，一种新的效应，即暗孤子的周期性再生效应，稳定地存在于具有分布参量的光纤系统中，不会受到孤子间相互作用的影响。

Now, TH-ASSS has realized ASM1 and 1-D SST Model and reserved good interface for other models. This paper focuses on theory and method of model application in practice. It adopt day-period curve to simulate the variation of influent, pollutant distrubution's normal status and average-HRT to simulate the influence of hydraulic delay in practical system.

本研究重点分析模拟系统与实际系统结合的理论和方法问题，采用进水日周期性变化曲线来模拟实际进水的动态变化，结合污染物排放呈正态分布和动态平均HRT方法模拟水力延迟对模拟结果的影响，将呼吸法测量直接用于参数估计和模型校正中，使模拟系统能够很好地符合实际系统。

Phase-lagged cyclic boundary condition is implemented by a novel method in conjunction with the developed sliding interface technique to accurately simulate the arbitrary pitch ratio rotor/stator interaction without any modifications of the physics of the problem. It's for the first time to compose the computational area into one structured grids including both rotor/stator of centrifugal or axial turbomachinery with arbitrary pitch ratio. This method can eliminate the iteration of boundary conditions on the sliding interface and calculate the unsteady flow within rotor and stator simultaneously.

为了能够在较小的计算区域内不改变叶型而真实地反映出任意栅距比时的内部非定常流场，并避免近似仍采用相位后滞周期性条件，结合本文发展的网格技术，给出了一种新的实施方法，首次将动、静叶片数不等的离心式/轴流式叶轮机械转子、静子计算区域组合在一套结构化计算网格中，动/静叶排间的滑移界面完全按内场处理，避免了每一时层内，滑移界面处边界条件的迭代计算；并保证了每一时层，滑移界面处流动参数的守恒特性。

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