扰动

The research of the dissertation provides science evidence for minishing initial disturbance and reducing experiment rockets.

本文的研究为减少火箭弹起始扰动，减少火箭试验用弹量提供了科学依据。

The Cassini spacecraft has revealed a never-before-seen level of detail in Saturn's F ring, including evidence for the perturbing effect of small moonlets orbiting in or close to the ring's bright core.

卡西尼飞船显示出土星F环前所未见的细节，以及靠近或在环的明亮核心地带的小卫星造成的扰动证据。

The strengthened depth and so on; on the other hand, the compound mode of those influencing factors in the design and the difference of theoretical model should not be ignored, So, a state equation of limit equilibrium, which was applied to stability analysis of soil nail structure, was set up considering the influence of inter-slice force and combining the idea of disturbance force of Sarma with slice method. In the design of timbering of excavation, the reliability theory was used to analyze not only the sensitivity of random variables, including index of reliability and safety factor, but also the relationship between them.

因此，在理论分析模型方面，应用Sarma所提出的扰动力概念与条分法相结合，建立了考虑条间作用力影响的土钉支护结构稳定分析极限状态方程；在开挖支护设计方面，运用可靠度理论分析了各项设计参数及其组合方式对安全系数与可靠度影响的敏感性，以及安全系数与可靠度的相互关系。

Via basic and descriptor adverse transformation of matrix, an equivalent standard linear system is derived. Sufficient and necessary conditions are established for observers with disturbance decoupling and LTR in systems. Analysis showed that the necessary and sufficient condition for observers with LTR is disturbance decoupling to any undnown inputs. So it is con verted to the problem that observers are designed with disturbance decoupling.

通过矩阵的初等变换和广义逆变换，将非方广义系统等价地转化为正常状态空间的广义线性系统，并运用有关定理给出观测器具有干扰解耦和环路复现特性的充要条件，经分析可知，系统具有环路复现特性的充要条件是系统对于任何未知输入干扰解耦，则具有环路复现特性的干扰解耦观测器的设计问题转化为系统关于任何扰动都是解耦的。

Variating curves of enthalpy, flow rate, steam quality and pressure were obtained theoretically, and compared to the test data with good agreement. At supercritical pressure the heated surface may be divided into two regions, hot water and steam phase, the dynamic mathematical models could by established.

并对该传递函数进行了理论分析，得到了蒸发受热面蓄热量和工质物性对其动态特性的影响规律，用理论方法计算出了工质焓、流量、干度和压力等在输入扰动的条件下随时间的变化曲线，并与高压试验数据进行比较表明，结果是令人满意的。

The occurrence frequency of upflows increases with geomagnetic activity.

在400km高度以上，高速行离子流发生率随MLT的分布呈现出晨昏不对称性；平静时发生在黄昏扇区的频次较高，而扰动时则在凌晨扇区的发生率较高。

At EISCAT site, the starting altitude of upflows is found to lower from 350 -400 km under quiet conditions to 200-250 km under disturbed conditions.

在EISCAT站，太阳活动高年期间，磁扰动时高速上行离子流出现的起始高度，由平静时的350-400km降低至200-250km。

Whereas the seismic thermal lithosphere is about 150km thick, which means the Tarim lithosphere is not steady and became thinner. In this paper, writers analyzed the Tarim lithosphere thinning mechanism based on the tectonic thermal evolution quantitative method, and discussed three possibilities:the hotter India asthenosphere intruded under the Tarim lithosphere and made the Tarim lithosphere became unsteady;the bottom of Tarim lithosphere is heated by friction of the atheonosphere flow and washed off by the hot asthenosphere; the Xizang lithosphere delamination induced the convection, and the upflowing mentle heated the bottom of the Tarim lithosphere and make it enthinning.

本文利用构造热演化方法对塔里木岩石圈减薄的热演化过程进行了定量分析，探讨了塔里木盆地岩石圈减薄可能的三种机制：印度板块与欧亚板块碰撞后青藏高原岩石圈底部的软流圈较塔里木盆地岩石圈底部的软流圈的温度要高，青藏高原的软流圈地幔向塔里木盆地岩石圈底部侵入形成的热扰动使得塔里木盆地岩石圈底部的温度升高；塔里木岩石圈与其下流动的软流圈的摩擦剪切生热导致其岩石圈地幔底部温度升高，使得岩石圈底部发生热侵蚀，从而使得与软流圈接触的岩石圈地幔不断地加入到软流圈地幔；在塔里木盆地岩石圈的下部，青藏高原的岩石圈在该处发生了拆沉，从而诱发的软流圈地幔对流，上升的软流圈地幔流使得岩石圈地幔的温度升高而熔融，成为软流圈地幔。

The period and e-time scale of the unstable coupled waves increased with the increase of the effect of the deep-sea to the mixed layer at the same latitude, same scale and same coefficient of air-sea coupled interaction, and so the minimal e-time scale and the period of the unstablest coupled waves increased with the increase of the effect of the deep-sea to the mixed layer.

2在相同的纬度，同一扰动尺度和海气相互作用系数下，不稳定海气耦合波的周期和e折时间尺度都有随深层海洋对混合层作用的增加而增大的趋势。

The definition of generator angle is proposed in this paper. A new method to deduce generator angle by using rotor rotation signal is illustrated, which compares the phase difference between GPS timing pulse and RRS. Using only mechanical signal, the technique unfreezes limitation of zero-cross of generator terminal voltage during transient process. Automatic correction of initial generator angle is also proposed .

本文介绍了同步发电机绝对转子角的定义，提出了一种测量绝对转子角，进而获得高精度的相对转子角的方法；此方法不使用机端电压过零整形脉冲，而是将机组键相脉冲与GPS 定时脉冲比相，并能够自动整定初始位置角，因此，测量结果不受发电机运行状态的影响，能够在各种运行方式和扰动情况下获取高精度的绝对转子角。

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