模态

We introduced all parts of a general repetitive control system after depicting the regulations of the repetitive control theory. The parts include inner model, delay section, compensator, low pass filter and controlled object. And we also analyzed the robust, convergence, following error of the repetitive control system.

阐述了重复控制的基本思想，重点介绍了重复控制系统得各个组成部分，包括重复控制器的内模、周期延时环节、补偿器、低通滤波器和控制对象等，并且分析重复控制系统的稳定性、收敛性和稳态误差等性能特征。

If T is not continuous, even if T is a upper semicontinuous triangular norm, it is showed by examples that there exist fuzzy dynamic systems formed by eq(1), which have unstable equilibriums.

以实例说明了即使三角模T是上半连续的，也存在形如(1)的模糊离散动力系统，使其某个平衡态在Lyapunov意义下不稳定。

The results show that the major contribution to DOS of Mg and Pb are the 2p orbit of Mg and the 5d orbit of Pb, followed by the 3s orbit of Mg and the 6p orbit of Pb, the 6s orbit of Pb is the smallest one. There are a large number of charges around Mg, it has the characteristics of typical metal bond. Mg and Pb share some charges to form covalent bond, but the distortion of the charge at the junction is little; the proportion of covalent bond is less than the metal bond, Mg2Pb is semimetal. The elastic modulus and shear modulus of Mg2Pb are 68.6 and 27.9 GPa, respectively. Based on Pugh empirical criterions and Poisson's ratio, Mg2Pb is brittle in nature.

结果表明：Mg和Pb对态密度的贡献主要是Mg的2p轨道和Pb的5d轨道，其次为Mg的3s轨道和Pb的6p轨道，Pb的6s轨道贡献最小；在Mg原子周围有大量的电荷存在，呈典型的金属键特征，Mg、Pb之间存在共用的电荷，有较强的离域性，以共价键形式存在，但交界电荷的畸变不大，故共价键所占比例较少，金属键所占比例较大，Mg2Pb化合物呈半金属性；Mg2Pb的弹性模量和切变模量分别为68.6和27.9 GPa，Pugh经验判据和泊松比均表明Mg2Pb具有脆性。

The thesis is focused primarily on various components of SVC control and...

仿真结果表明，由于模糊控制的引入，削弱了滑模变结构控制的抖振现象，所设计针对电压的SVC控制策略实现简单，不但可以显著的改善系统的电压稳定，还可以明显的改善系统的功角稳定，提高了系统的暂态和动态稳定件。

This article introduces the flow characteristics obtained in the model test often adopted in a tangentially fired furnace and compares them with the results of hot state measurement.

本文介绍切向燃烧炉膛常用的模化试验所得的气流特征，并与热态测定结果进行比较，从而得出两者的相似点和差异。

It has potential applications in the fields of optical tweezer, quantum information process and computation.

拉盖尔高斯(Laguerre-Gaussian，LG)模是光子的轨道角动量本征态，它在未来的光镊、量子信息和计算等领域有潜在的应用价值。

Thus it has more degree of precision than the conventional assessment of two dimensional method and three dimensional method.

但由于部模的"尺度效应"和实船表面的粗糙度原因，两者间的流态和阻力系数都存在着

The signal main-frequency measurement Model, Hou-Yang Model and the new criterion of Umf were based.

在直径分别为100mm和150mm流化床冷模实验装置中，以及φ1000的HDPE中试流化床聚合反应器、φ3500的LLDPE、φ3500的HDPE和φ5000的Bi-mode PE工业流化床聚合反应器装置中，测量了颗粒流态化产生的声波信号。

Analysis of power spectrum indicates that the characteristic frequency created by the Hopf bifurcation is equal to the generalized winding number of the critical transverse modes just before the bifurcation.

结果表明，耦合振子的同步混沌态可以发生一种Hopf分岔，在Hopf分岔后，系统的功率谱中出现了一个特征频率，其值恰好等于分岔前临界横模的广义旋转数。

The study results indicate that as emission power increases, the peak power density on the section of a certain distance will increase firstly, then it will descend and that the peak light intensity on the section will increase with the increasing of spot radius of basic mode Gaussian beam. As the propagation distance increases, the peak light intensity on the section will descend gradually, and the laser energy will spread. The light intensity distribution exhibits straw hat shape on a certain conditions, in other word to say, the central light intensity is less than acroteric light intensity.

结果表明，无风稳态热晕效应存在时，随发射功率的增大，一定传输距离截面上的峰值功率密度先增人后减小；截面上的峰值光强随基模高斯光束的腰斑半径的增大而增大；随着传输距离的增大，截面上峰值光强在逐渐减小，能量在逐渐向周围扩展；在一定条件下，截面上的光强分布会呈现中心光强小于周围光强的&草帽型&分布。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。