扰动

In this paper, the technique of constant temperature anemometer is usedto study the turbulent boundary layer which is controlled by periodicblow-suction on the wall.

本文应用热线测速技术，对风洞中平板湍流边界层壁面施加周期性抽吸扰动进行实验研究。

By increasing advance angle of ignition, adopting turbulence combustion chamber with adequate compression ratio, the serious after burning situation can be alleviated greatly.

通过增大点火提前角，采用气流扰动强烈的湍流型燃烧室，并适当增加压缩比，可以有效地改善这一情况。

The probe nuclei 62 Zn/ 62 Cu, 187 W/ 187 Re and 111 In/ 111 Cd for perturbed angular correlation studies are produced at the CIAE HI 13 tandem accelerator through the nuclear reactions 63 Cu(p,2n) 62 Zn,Cd 111 In and 186 W 187 W.

在中国原子能科学研究院HI 13串列加速器上通过6 3 Cu(p ，2n) 6 2 Zn、Cd 111In和186 W 187W核反应产生6 2 Zn/ 6 2 Cu、187W / 187Re和111In/ 111Cd扰动角关联探针核，测量了生成这些探针核的核反应截面。

The angular frequency of the disturbing force called the impressed frequency .

扰动力的角频率称为外加频率。

In undisturbed inertial motion, the angular momentum is constant

在无扰动惯性运动中，角动量是恒定的。

The power system forced oscillation introduced by anharmonic periodic disturbances is then discussed. The effect of complicated pressure pulsation, ballistic pressure pulsation and quasiperiodic pressure pulsation on the stability of power system based on a single machine infinite bus power system and multi-machine power system are analyzed respectively through simulation.

从理论上探讨非简谐周期性扰动下的电力系统强迫振荡，并通过时域仿真分析单机无穷大系统和多机系统中汽轮机复杂压力脉动、准周期压力脉动及冲击性压力脉动对电力系统稳定性的影响。

It is worthwhile to make further study of the cause and mechanism of anomalous tremors before the Wenchuan earthquake.

汶川大地震的"震前扰动"产生的原因和机理值得我们去进行深入的探讨和研究。

In the mid- and high-latitudes there is very strong equator-ward momentum transport anomalously mainly by stationary eddies.

在中高纬地区，ENSO暖事件有很强的向赤道动量输送异常，这主要是由于定常扰动对动量输送的差异引起。

By direct numerical simulation of Navier-Stokes equations we investigate the three-dimensional evolution of a mixing layer, the three-dimensional merger of two parallel vortex tubes and reconnection of two antiparallel vortex tubes in the thesis.

本文用拟谱方法求解Navier-Stokes方程，对小扰动下平面混合层随时间的演化、同向平行涡管的三维合并和反向平行涡管的重联进行了直接数值模拟。

In this dissertation, the following critical theoretical problems on local La-grangian numerical differentiation are studied: explicit formulas, local estimate for the remainder, and the highest order of approximation in the case that the values of the function at these interpolation nodes have perturbationsLagrangian numerical differentiation is a method that the Lagrange interpolation polynomialis differentiated to approximate the derivative, where Tn ={t_0,t_1,......

本文主要研究有关局部Lagrange数值微分法的一些关键性的理论问题：公式的显式表示，余项的渐近估计，以及在插值数据有扰动的情况下，局部Lagrange数值微分法的最大逼近阶。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。