disturbing galaxy

The pseudo-spectra of waveform relaxation operators for ordinary differential equation systems are used,the spectra of perturbed systems are proved to be pseu-dospectra of matrix pencils.

利用常微分方程系统波形松弛算子的伪谱 ,证明扰动系统波形松弛算子的谱是矩阵束伪谱 ,并给出扰动系统的谱通常包含在未扰动系统的伪谱中 ,从而进一步证实了在非正规系统中伪谱确实是一个有用的科学计算工具。

This paper investigates relationships between spectra of waveform rela xation operators for nonnormal perturbed systems and pseudospectra of unperturbe d systems.

研究了非正规系统在扰动的情况下波形松弛算子的谱与未扰动系统的伪谱之间的关系,我们的研 究清楚地表明伪谱总比扰动后的谱包含更多的信息。

Associated with the variational systems of non-perturbation systems, a kind of almost periodic perturbation system with deviating argument is investigated by using the contraction mapping principle.

结合非扰动系统关于其概周期解的变分方程系,运用压缩映射原理研究一类具有偏差变元概周期扰动系统的概周期解,获得系统存在唯一概周期解的一组充分条件。

The study of an exponentially stable character of perturbed system at the point of equilibrium;

探讨扰动系统在平衡点处指数的稳定性

On the least upper bound of the number of limit cycles of a class perturbed system;

一类扰动系统极限环个数的最小上界

We generalize the perturbed system for the case when the origin of normal system is exponential stable .

主要讨论了一类扰动系统的指数稳定性问题 。

Effects of the Interplanetary Disturbances on Geomagnetic Storm Development

行星际扰动对地磁暴发展的影响研究

Statistical Analysis and Simulation Study on Interplanetary Disturbances and Their Geoeffectiveness

行星际扰动与对地效应的统计分析和模式研究

Possibility of Triggering the Geomagnetic Disturbances by the IMF Northward Bz Component

行星际磁场北向分量触发磁层扰动的可能性

theory of the motion of interplanetary vehicle

行星际飞行器运动理论

The possibility of triggering the geomagnetic disturbances by the northward Bz component of the IMF is discussed using some typical events and statistical analyses.

本文用典型事件和统计分析论证了行星际磁场北向分量触发地磁扰动的可能性.

South Tropical Disturbance

南热带扰动 -木星

planetary and interplanetary probe

行星和行星际探测器

Security - Safeguarding International Civil Aviation against Acts of Unlawful Interference

安全-保障国际民用航空免受非法行动干扰

International Interplanetary Space Travel Research Association

国际星际航行研究协会

an interplanetary journey in a space ship

乘太空船作星际旅行

Variation in a designated orbit, as of a planet, resulting from the influence of one or more external bodies.

微扰，摄动在固定轨道中的变化，如行星，由一个或多个外部物体的影响引起

But a national campaign among the fans of the star Trek television show,

但是电视节目《星际旅行》的狂热爱好者们发起了一项全国性的运动，

Interaction between interplanetary shock and corotating high speed stream studied by a 3-D kinematic method

用三维运动学模型研究行星际激波与共转高速流的相互作用

Establishment of Simulation Software to Jam The Up-link Signal of SATCOM

对卫星通信上行信号干扰仿真软件的建立

Research on Active Disturbance Rejection Control in Attitude System of Magnetic Satellite;

主动磁控小卫星自抗扰姿态控制系统研究

Analysis and Investigation of the Interference from the Mobile Satellite Service to the Fixed Service

卫星移动业务对固定业务的干扰分析研究

New Blind Interference Suppression Method for CDMA Mobile Satellite Communication Systems

CDMA卫星移动通信系统中的盲干扰抑制新方法

Characteristics of the Propagation and Evolution of Interplanetary Coronal Mass Ejections in the Heliosphere;

行星际日冕物质抛射在行星际空间的传播和演化规律