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It Probed into the effect of concentration explosive limit s caused by the nature of explosive gases, the damping effect of polybasic Gas caused by CO, as well as the conjunct oxidative and inductive effect .

探索了可燃性气体本性对浓度爆炸极限的影响、CO对多元瓦斯气体的阻尼效应以及C2H4与CO间的协同氧化诱导效应。

By two steps, the material is obtained by the method that polyhydric alcohol, diisocyanate and a diatomic alcohol chain extender with 8-18 C-structural branch chains are mixed and poured into a polyurethane elastomer that achieves a damping effect through the combination and dissociation of a hydrogen bond between the branch chain and the main chain for consuming energy.

该类材料是通过两步法将多元醇、二异氰酸酯和带有8～18个C结构支链的二元醇扩链剂混合浇注成聚氨酯弹性体，通过支链与主链之间氢键的结合与解离消耗能量，起到阻尼效果。

At last, natural frequencies of practical pre-stressed composite space truss are tested with pulsatory method on construction site and its damping ratio is calculated, which gives another important data for engineering design. In addition, through the model experiment of pre-stressed rectangular square pyramid composite space truss, the correctness of characteristics of internal force and the feasibility of tension recovery method are proved.

最后，在工程施工现场用脉动法测试自振频率，并借助于振动衰减曲线和半功率点法计算出预应力组合网架——钢与混凝土的混合结构体系——的阻尼比，此又为工程设计提供了一理论依据；另外，通过正放四角锥预应力组合网架的模型试验，验证了结构内力分布特点的正确性以及张力松弛法的可行性。

Both in light and heavy fluids,the impact of geometrical parameter of the elastic plate on its acoustic radiational damping was discussed.

从能量的角度定义弹性板声辐射阻尼，取得声辐射阻尼的数值计算公式。

But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.

本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。

The damping control is used to enhance the control capability of the system. The return control is used to improve the returnability.

助力控制用来提高转向轻便性，阻尼控制用来提高转向应急能力和抑制转向盘力矩波动，回正控制用来提高驾驶员在转向后松开转向盘时的回正能力。

A co-simulation is investigated combined with control model in MATLAB/Simulink and mechanical model in ADAMS. The simulation results prove that when steering a large angle on slippery roads, yaw compensation can improve the stability of automobiles; when steering at a low speed, return compensation can improve the lack of returnability caused by friction loss torque; and when steering at a high speed, damping compensation can reduce the oscillation of steering wheel, improve the maneuverability and stability and also avoid overshoot.

仿真结果证明，在潮湿光滑路面上行驶过程中，进行大角度快速转向，在助力中加入横摆补偿可以提高汽车的稳定性；在汽车低速行驶转向回正时，施加回正补偿可以改善汽车因摩擦转矩而导致的回正不足；在汽车高速行驶时施加阻尼控制，可以衰减方向盘抖动现象，提高操纵稳定性，防止打手现象发生。

Rubiaceae , expelling toxin cooling, promoting blood circulation, damping elimination and relieving itch, which is broadly used curing Lower limb phlebitis in northeast china for many years, marked curative effect.

为茜草科植物，在东北民间有广泛的药用基础，资源十分丰富，具有清热解毒、行血、利湿止痒的功效，近年来临床应用治疗下肢静脉炎，疗效显著。

Located in Gu Ting Shan Economic Developing Zone, LiuZhouCity, Lihe covers more than 10,000 square meters, in which more than 6000 square meters are plants. Lihe has excellent technical measuring devices and laboratory equipment including 1 damping device production line , 2 上边梁装饰条 lines, 4 sebific duct lines, a 14"and a 16" rubber processing mills, a 35 litre 密炼机, 13 50-100 tone 电动液压成型机,ect.

公司位于广西工业重地柳州市古亭山经济开发区乐业园，占地面积1万多平方米，其中生产面积6000多平方米，现公司主要设备有2条阻尼胶生产线，2条上边梁装饰条生产线、4条胶管生产线、1台14寸炼胶机，1台16寸炼胶机，1台35升密炼机，13台50-100吨电动液压成型机，12台注塑机和2百多套产品模具，以及良好的技术检测手段和实验设备。

Located in Gu Ting Shan Economic Developing Zone, Liu Zhou City, Lihe covers more than 10,000 square meters, in which more than 6000 square meters are plants. Lihe has excellent technical measuring devices and laboratory equipment including 1 damping device production line , 2 上边梁装饰条 lines, 4 sebific duct lines, a 14"and a 16" rubber processing mills, a 35 –litre 密炼机, 13 50-100 tone 电动液压成型机,ect.

公司位于广西工业重地柳州市古亭山经济开发区乐业园，占地面积1万多平方米，其中生产面积6000多平方米，现公司主要设备有2条阻尼胶生产线，2条上边梁装饰条生产线、4条胶管生产线、1台14寸炼胶机，1台16寸炼胶机，1台35升密炼机，13台50-100吨电动液压成型机，12台注塑机和2百多套产品模具，以及良好的技术检测手段和实验设备。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。