扰动

Through the computer simulation, the dynamic characteristics of gas turbine, HRSG and steam turbine under the disturbances of the load and inlet working substance parameters of HRSG were studied, and after studying the parameters and the control rule of HRSG water level control system, the parameters of the control system were predicted, and at last characteristics of the system with water level control were analyzed.

通过计算机仿真，研究了燃气轮机、余热锅炉和汽轮机在负载和余热锅炉进口工质参数扰动下的动态特性；对余热锅炉水位控制系统的参数和控制规律进行了研究，确定了控制系统的参数，并分析了系统在加入水位控制后的动态响应特性。

The analysis of the performance of HRSG water level control system shows that, under the disturbance of load and inlet working substance of HRSG, the unit response can be controlled effectively, and the unit stability and control quality can be improved, so the unit control performance is improved obviously.

对余热锅炉水位控制系统的特性分析表明，水位控制系统能够在负载和余热锅炉入口工质参数扰动下有效地控制机组响应特性，保证机组的稳定和控制品质，控制性能得到明显改善。

I, wrapt from him in a confused mist of time, was wondering what he could think, could he know that at this actual moment he would have been dead thirty years, and that his memory would be thus preserved and honored in the beloved school, where his delicate spirit had been so strangely troubled.

我对他的思绪沉浸在那纷繁不清的时间迷雾之中。我思忖着，在他逝世30年后的此时此刻，如果他能知道，在这受人爱戴的母校里，在这曾让他那敏感的心灵受到莫名扰动的地方，人们是这样怀念他、称誉他，他会作何感想呢？

Some native shade-tolerant or hygrophilous plants had disappeared, while some xerophilous, disturbance-resistant species, as well as some exotic and synanthropic species, had expanded their populations.

结果表明：(1)旅游干扰显著改变了林下植物物种组成：耐荫喜湿的乡土植物局部消失，而喜旱耐扰动的植物种群扩大，外来和伴人植物种群侵入。

In section 2, if φ satisfies some conditions, a result is obtained that f can be reconstructed from the sampling values when the sampling set is Z or the sampling set is a small perturbation of Z.

在第二节，我们证明了若φ满足适当的条件，采样节点为整数节点或采样节点为为整数节点的微小扰动时，函数能够由其采样值稳定而且唯一的重建。

This new control method can achieve zero voltage regulation of the converter output voltage, i.

PSPICE8.0的计算机仿真和试验研究结果表明，这种新型非线性闭环控制策略具有快速的动态响应，对电源输入电压与负载电流的扰动具有优良的抑制能力，抗干扰能力强，无需乘法器或除法器、控制电路简单、性价比高。

Using the method of record on spot, the thrust correlation data to the construction process are recorded, the analysis have indicated that the jacking force have complex influence factors, basically assumed the linearity with the pipe distance; The synthesis friction coefficient jumps to a peak value from zero at the beginning section, then gradually drops until stabilizes to a lower level and keep to the end.

分析表明顶力影响因素复杂，与顶距基本呈线性递增关系；综合摩擦系数从出洞时的剧增到一峰值，逐渐下降直至稳定到一较低的水平直至进洞结束；顶管施工对上层土体的扰动是明显的，须采取有效的措施进行监测和预防其破坏程度过大。

Study is performed of the stability of Kelvin wave and zonal symmetric disturbances in zonal shear flow.

分析了纬向切变基流中的赤道Kelvin波以及纬向对称扰动的稳定性。

Horizontal windspeed shear,if bigger than a critical value associated with vertical wavenumber m, factor β, hydrostatic stability N^2 and Richardson number Ri ,leads to instability of equatorial ifiternal inertial gravity wave on the y-z plane,which thus causes zonally syrmnetric disturbances to emergence and development.

只要风的水平切变足够大，大于某一临界值（该临界值与垂直波数m，β因子，静力稳定度N^2以及Richardson数Ri有关），在赤道y-z平面上的重力惯性内波也会发生不稳定，从而引起这种沿x轴对称扰动的激发产生与发展。

It is pointed out that the Pacific / North American, the Eurasian , and the North America / Western Europe Patterns comprise the zonally elongated "Seesaw" and wave like structures, while the Asia / North American pattern is dominated by the waveli'ke structure.

结果指出：太平洋/北美型、欧亚型和北美/西欧型由"Seesaw"和波列结构组成，而亚洲/北美型主要呈波列结构，其中"Seesaw"结构及其与西风急流的配置关系、扰动在急流出口区通过正压能量转换从基本气流中获取能量等特征对于夏季北半球遥相关的形成和维持起重要作用。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。