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The characters and reasons of PIO are introduced. Taking an aircraft's PIO as an example, the PIO's principle (the more than 180 degs lag of the normal load behind the stick force, and the coupling of the pilot and the aircraft's short period mode) is analyzed.

介绍了产生驾驶员诱发振荡的原因，并以某飞机发生PIO为例，分析了产生PIO的机理——法向过载相位对纵向杆力的滞后接近于180°，驾驶员模态和飞机短周期模态出现了严重耦合。

By using equilibrium constant, activity coefficient, water activity and relative humidity of deliquescence properties in secondary aerosol model, we set the model and tested the sensitiveness.

本论文的研究内容主要将大气中二次气胶生成机制并入光化学轨迹模式中，利用大气气相-气胶之间热力动性质平衡常数(K、活性系数、水活度、相对潮解湿度，建置二次气胶模组，并测试二次气胶模组对各影响因子的敏感度。

The main research contents and results are given as follows:(1) Principles and characteristics of different types of polarization controllers are analyzed, the compare of the difference of these polarization controllers are discussed based on them, drawn a conclusion that the polarization controller which based on squeezing fiber and has variable delay quantity are suitable for high speed optical communication system.(2) The reset principle of the typical four channel polarization controller which is based on squeezing fiber is analyzed, and the design of its concrete reset scheme is given based on them. The reset process and the corresponding operation list are given in detail.(3) The systematical experiment is made when the typical four channel polarization controller is put into the PMD compensator. The experiment result showed that the channel which needs reset can efficiently return to the mean place, and the effect of reset was good, it didn't cause any badness infection on PMD compensation.(4) A new type optical signal time-domain depolarizer is given, and a new PMD compensate method is given based on it.

由此得出延迟量可变型光纤挤压型偏振控制器适用于高速光通信系统的结论；(2)具体分析了典型的四通道光纤挤压型偏振控制器的复位原理，并在此基础上对其进行了具体复位方案的设计，给出了各种情况下的详细复位流程和相应的复位操作列表；(3)将四通道光纤挤压型偏振控制器应用于偏振模色散补偿器中进行系统实验，实验结果表明，需要复位的通道能有效地回到中间值，复位效果良好，且复位未对PMD补偿产生不良影响；(4)设计了一种新型的光信号时域退偏器，并基于该退偏器提出了一种新型的偏振模色散补偿方法。

The latter is essentially derived from the geometric realization of Happels triangulated equivalence between stable module category of repetitive algebra and bounded derived category of finite dimensional algebra. In terms of this realization, we deduce that the Lie algebra realized by derived category of a finite dimensional algebra is isomorphic to the Lie algebra realized by stable module category of the corresponding repetitive algebra.

后者本质上是Happel关于重复代数的稳定模范畴和导出范畴的三角等价的一个几何实现及其应用，使用这种几何实现，我们可以证明在重复代数的稳定模范畴上定义的李代数同构于相应的导出范畴上实现的李代数。

Because the slidingmode is designable and it is not concerned with the perturbation of theparameters of the structure and the varieties of the disturbance, thesliding mode is absolutely self-adaptive.

由于滑动模态可以设计而且它与控制对象的参数摄动以及外界的扰动无关，这使得滑模控制对外界扰动和系统内部参数的摄动具有完全的自适应性。

It is shown that both deviator stress and confining Stress greatly affect resilient modulus, and the influence of water content is great. Degree of compaction is also an important factor affecting resilient modulus.

结果表明：偏应力σ(下标d和侧向应力(σ3)对路基土回弹模量均有显著影响，含水量对路基土回弹模量的影响非常大，而压实度同样是一个主要影响因素。

Moreover, when the normalized damping matrix is diagonally dominant, it is strictly shown that decoupling the modal equations by neglecting the off-diagonal elements indeed minimizes the error upper bound.

同时，还严格地证明了，当正则化的模态阻尼矩阵是对角占优时，由忽略其非对角线元素使模态方程解耦的方法所引起的误差的上限的确能达到最小。

Dynamic mechanical analysis,mechanical properties and the thermal dilatability measurements were used to study the effects of SF content on dynamic mechanical properties,impact strength,bending strength,bending modulus,specific strength,specific modulus,wear resistance and thermal dilatability.

采用动态力学、力学性能、热膨胀性能等测定研究了剑麻纤维的加入量对复合材料的动态力学性能、冲击强度、弯曲强度、弯曲模量、比强度、比模量、耐磨性能、热膨胀性能的影响，用扫描电镜观察了材料冲击断面和磨损面的形态。

Here Ye Muna Ganges River and the intersection of the broad river, the Ganges water Hunhuang dirty side of the float with many bubbles and all kinds of garbage, while the other side of the Ye Muna river is crystal clear bottoming out.

这里叶模纳恒河和广大河交汇处，恒河水Hunhuang了许多气泡和各种漂浮垃圾脏的一侧，而在叶模纳河的另一边是非常明确的见底。

In the first part, it is concluded that load is the most fundamentally reason leading to disablement of die after experimentation research, manufacture experience and stat.

第一部分是在锻模的实验研究、生产经验和调查统计的基础上，分析其失效形式和失效机理，得出引起锻模失效的最根本原因是负荷。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。