动力学的

Point to take MQ2535 portal crane jib system as to research object, take finite element and mechanical kinetics as to theoretical fundamental, make use of ansys8.1 to emulate jib systemic at the course of luffing in dynamics , obtain luffing procedural dynamics data of rigid body and elastic body of the jib system , according to those data,which is to improve these system designs beneficial conclusion henceforth.

针对以上问题，本文以MQ2535门座起重机臂架系统为研究对象，以有限元和机械动力学为理论基础，借助ANSYS8.1对臂架系统的变幅过程进行了动力学仿真，得到了臂架系统刚体和弹性体变幅过程的动力学数据，从数据中得到了对今后改善该系统设计的有益结论。

But at low pressure, the continuum theory is no longer suitable and only the molecular dynamics method is passably valid. However, there have been yet a few studies on the squeeze film of micro-resonators in the free-molecule regime, and no 3D model of MD has been presented for SFD.

当气压很低时，气体连续介质模型不再适用，只能采用分子动力学方法但是，当前关于自由分子区域中的微谐振器件挤压膜阻尼的分子动力学研究非常少，为了避免计算量过大，还未有三维的挤压膜阻尼分子动力学模型。

In order to prevent grains from congregating so as to minish the size of the powder, the growing rate of the crystal grain was controlled during the hydrolysis of tetra-nbutyl titanate by using the competitive reactivity of the surface modifier sulfhydrate.

动态分子光谱分析法示踪了偶氮染料、取代酚在TiO〓半导体界面/溶液的光降解动力学行为，发现了中间体生成和衰减的峰形动力学特性，应用误差补偿理论拟合了中间体的峰形动力学曲线。

Synthesis of cyclohexyl acetate with rare earth composite solid superacid catalyst of SO2-4/TiO2/Ce4+was investigated.

研究了以稀土复合固体超强酸SO42-/TiO2/Ce4+为催化剂合成乙酸环己酯的反应，在反应温度分别为100℃、110℃、120℃下，测出酯化反应的动力学参数，建立了动力学方程，并与无催化剂作用下合成乙酸环己酯反应的活化能及动力学方程进行了比较。

The efficiency of an closed epicyclic gear train is analyzed by means of this formula, some of efficient curves are drawn, and an adequate selecting range of transmission ratio is found.

推导出了动力学模型中惯性元件、弹性元件和分支节点的动力学分析的数学模型，用传递矩阵法建立起封闭周转轮系动力学分析的数学模型。

The synthesis of isoamyl acetate with the solid super acidic catalyst of S2O827TiO2-Al203 is investigated. The kinetic parameters of reaction are measured at 94℃, 100℃ and 106℃ respectively and the kinetic equation is thus built, which are compared with those of the reaction without catalyst.

文章研究了以固体超强酸S2O82-/TiO2-Al2O3为催化剂合成乙酸异戊酯的反应，在反应温度分别为94℃、100℃及106℃下，测出合成乙酸异戊酯的动力学方程参数，建立了动力学方程式，并与无催化剂时酯化反应的活化能及动力学方程式进行了比较。

The synthesis of isoamyl acetate with the solid super acidic catalyst of S2O82-/TiO2-Al2O3 is investigated.The kinetic parameters of reaction are measured at 94℃,100℃ and 106℃ respectively and the kinetic equation is thus built,which are compared with those of the reaction without catalyst.

文章研究了以固体超强酸S2O82-/TiO2-Al2O3为催化剂合成乙酸异戊酯的反应，在反应温度分别为94℃﹑100℃及106℃下，测出合成乙酸异戊酯的动力学方程参数，建立了动力学方程式，并与无催化剂时酯化反应的活化能及动力学方程式进行了比较。

In general, the major results are:(1) Established the geometrical model for the enwinding of the wire rope in the roller, such as the inclination of the wire rope and the climbing equation of roller in the commutation process;(2) Established the tensile force kinetic model for the enwinding wire rope used the Lagrange kinetic equation and the continual kinetic theory in the start up and retard moment. Solved the equations by the method of modal analysis and separation of variables(3) Based on the analysis on the enwinding mechanism of the wire rope, we did the research on the mechanics behavior of the wire ropes enwinding process.(4) According to the research above, we made the computer program to solve the mechanics models. And after parametric analysis, we made the suggestion for the improving of the current wire rope enwinding system.

主要研究工作有：(1)建立了钢丝绳在滚筒缠绕几何模型，研究了钢丝绳缠绕过程极限偏角及换向过程在滚筒爬坡机理及几何模型；(2)依据LAGRANGE系统广义动力学方程、连续体动力学理论分别建立起升系统启动及制动过程钢丝绳缠绕快绳拉力的动力学模型，并分别采用模态分析法及分离变量法求解；(3)结合对钢丝绳在钻机滚筒缠绕机理分析的基础上，研究了钢丝绳在滚筒缠绕过程力学行为；(4)编制计算机仿真程序对上述模型进行求解，在参数分析的基础上提出对目前钢丝绳缠绕系统结构改进建议。

The purpose of shaft furnace reduction is to capture oxygen from iron ore and to produce iron. The experiments of reduce weight is used to measure the reaction ratio of CO and H〓 reduction iron ore.

通过建立一套测反应速率的装置，分别对球团矿、块矿用CO和H〓在不同条件下进行了还原反应动力学实验，建立了单界面动力学反应模型，根据理论分析和实验结果得到了不同原料的反应特性及相应的动力学参数。

Based on the theories of multi-body systems, this paper presented the subsystem method for dynamics of a rigid-flexible coupling system and a method for a flexible cantilever beam attached to a moving central rigid-body undergoing an arbitrarily three-dimensional large overall motion .

本文根据多柔体系统动力学理论，创新地提出了子系统的刚柔耦合动力学建模方法和考虑动力刚化效应的中心刚体作任意三维运动梁作三维振动的动力学建模方法。

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。