扰动

When the erodible velocity was greater than the velocity that sediment started to move, the soil samples with burrows were easier erosion than the soil Samples without burrows.

当冲刷流速大于土样泥沙起动流速时，有生物洞穴扰动的土样比无生物洞穴扰动土样更容易被冲刷。

The Variation of Atmospheric Latitudinal wind and disturbed geopotency of one class stems from the hearting of Ocean to Atmosphere and Kelvin wave. Latitudinal wind and disturbed geopotency of second class are affected by direct heating and short Rossby wave.

大气零阶的扰动位势和纬向风速的变化来自于海洋对大气加热的直接作用和海洋加热所产生的Kelvin波，而二阶的扰动位势和纬向风速则不仅受到海洋加热直接作用的影响，也受到Rossby短波的制约。

The test results showed that: Young Modulus of undisturbed Kitan clay is much bigger than that of reconstituted one under the same stress level; Young Modulus of the same clay under high strain rate is bigger than that of small strain rate; Undisturbed Kitan clay showed perfect linear elastic property within small strain smaller than 0.01

试验结果显示：在相同应力水平条件下，未扰动Kitan粘土的杨氏模量大于重塑土；对于同一种粘土，在应变率大的情况下，它的杨氏模量同样大；在应变小于0.01%时，未扰动Kitan粘土呈线弹性。

The linear and nonlinear stability of different disturbances in parallel and nonparallel boundary layer are researched.

研究了不同情况下的扰动演化过程，特别是扰动增长因子的变化，这是稳定性研究的关键问题，还着重研究了非平行性和压力梯度对边界层稳定性的作用。

The experimental results show that the measurement error might be no more than 1 pixel for perturbance free images.

实验结果表明，对于无扰动的圆环图像其误差小于1个像素；对于有扰动的圆环像误差不超过5个像素。

Based on the assumption of the small perturbance,sufficient conditions of permanence for above systems are obtained by employing the known conclusions and Lyapunov function method.

在扰动适当小的假设下，应用有关脉冲自治系统的结论和Lyapunov 方法讨论该扰动系统的持续性问题，给出了该类系统持续生存的充分条件。

The cone-subdifferential stability of efficicient point set of bilevel multiobjective optimization with perturbational parameters in lower level is considered.

借助集值映射最优化问题有效解的锥次微分稳定性理论，讨论了上层无扰动，下层带扰动参数的二层多目标最优化问题有效点集的锥次微分稳定性。

Based on Born approximationmethod and the local principles of wave function in inhomogeneous medium and theray theory and the integral equation theory,this dissertation researches the theory andsimulation of the inversion method of large perturbational medium parameters andbreaks through the approximation condition of the small perturbational parametersand the weak scattering in traditional inversion method.

本文在Born近似方法的基础之上，基于非均匀介质中波函数局部理论和射线理论及积分方程等理论方法，对大扰动参数反演方法的理论和数值模拟进行了研究，突破了传统反演方法要求的参数小扰动和弱散射条件。

matlab sps is used to build a simulink model of single-machine infinite-bus system, and based on the simulink model, simulation on effect of pss suppressing small disturbances low frequency oscillation is carried on, and some methods of improving power system transient stability are simulated, including avr and pss, short circuit cleared rapidly, fault current limiter and single-phase auto reclose. the study unifies the simulink model to realize matlab and vb seamless integration using the activex technology, and demonstrated the matlab simulation result with the vb contact surface. this method of matlab and vb integration can make up the matlab contact surface unfriendly flaw and offers a reference for the design for cai of power system analysis course.

运用matlab电力系统仿真模块集sps构建了单机—无穷大系统simulink模型，对电力系统稳定器抑制电力系统小扰动低频振荡的效果进行了仿真；对提高电力系统大扰动功角稳定性的措施，如自动电压调节器及电力系统稳定器、快速切除故障、故障限流器、自动重合闸等手段的使用效果进行了仿真验证；并结合单机—无穷大系统的simulink模型运用activex 技术实现sps与vb的无缝集成，将sps的仿真结果用vb界面显示，较好地弥补了matlab用户界面不友善的缺陷，为《电力系统分析》课程进行cai设计提供了思路。

Therefore, to study the reconsolidation of disturbed soil and its influence on metro tunnel is very useful for controlling the disturbance of construction and the deformation of metro tunnel.

因此，研究扰动土体再固结及其对地铁隧道的影响，对于控制地下工程施工扰动和地铁隧道变形是很有用的。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐