微观研究

The influence of secondary carbides precipitation and transformation on hardening behavior of a 14Cr-1Mo-1.5V cast iron in sub-critical treatment was studied using optical microscope, transmission electron microscopy and X-ray diffraction.

为了揭示高铬耐磨铸铁硬化的微观机制，提高其使用性能，采用光学显微镜、透射电镜和X射线衍射研究15Cr-1Mo-1.5V高铬铸铁中二次碳化物的析出和转变对其亚临界处理硬化行为的影响。

We investigate the contact force distributions inside the static granular systems under the conditions of stochastic packing and confining pressure constraint. The influences of particle size distribution, packing fraction and constraint condition are also considered.

根据微观尺度下粒子的排列及接触特征，研究了静态堆积颗粒系统和围压约束下静态颗粒系统中接触力网的分布特征，同时分析了粒径分布、体积分数、边界条件等对接触力分布特征的影响。

In recent years, with the development of science and technology, particularly in the field of electronic technology, Si semiconductor increasingly harsh demands, in order to obtain a suitable quality of the materials we need. Molecular beam extention growth technology has received increasing attention .Si and Ge and SiGe heterojunction has wide research because of the wider use of the structure.

近年来，随着科学技术的发展，尤其是电子领域技术的快速更新，我们对Si基半导体的要求越来越苛刻，为了获得高质量的适合我们需要的材料，分子束外延的生长技术越来越受到重视，而Si和Ge因为SiGe异质结结构的广泛应用，一直是实验和理论研究的热点，我们通过分子动力学的模拟来了解这种方法的微观机理是非常有意义的。

Restricting this very general definition of collective behavior to kinematic observables leads to the definition of collective flow.

我们可以很好地通过研究末态粒子的这些宏观集体行为来了解核-核碰撞过程中的微观相互作用。

The morphological structure of cured vinyl-ester resin and the formation of two-phase structures in vinyl-ester resin has been studied by using SEM and differential scanning calorimetry.The results demonstrated the existence of clusters of gel-particles with a size of about 20 μ m,each cluster of gel-particles containing many gel-particles with coral-like structures.The formation of gel-particles resulted in two-phase structure characterized by the two peaks in the rescanned DSC thermographs of the resin. The cure conditions (temperatures,post-cure) affected microstructure in the cured resins.

采用SEM、DSC研究了乙烯基酯树脂固化过程中凝胶粒子的形成过程及两相结构对固化放热的影响，结果表明，凝胶粒子在固化树脂中呈群状分布，每群凝胶粒子的最大尺寸为20μ m左右，每群凝胶粒子由许多独立凝胶粒子组成；凝胶粒子的形成使树脂产生了两相结构，使树脂的恒温DSC残余放热呈双峰分布；树脂的固化条件影响其微观结构。

Because the rate of ET and HT reactions is determined by the coupling term J, and in long range ET and HT systems the degeneracy of the π orbitals of donor and acceptor is lifted through mixing with the bridge orbitals of appropriate symmetry by an amount △E. Because the △E splittings are proportional to electronic coupling, so we can use the static quantity △E to exploring the dynamic quantity J, and to make a detailed study on the microscopic influence of coupling mechanism in ET and HT process.

由于电子转移和空穴转移反应速率的大小决定于反应的耦合因子，在长程电子转移和空穴转移体系中，给体和受体的简并π轨道由于与饱和桥之间的TB作用而产生一定的分裂能，此分裂能又与耦合因子的数值成正比，因此，我们可以用静态的分裂能数值间接地表征动态的耦合因子，从而详细研究电子转移和空穴转移过程中耦合机理的微观影响因素。

In order to widen selective range of coals in cement kiln, in this thesis, the research of ignition characteristics, kinetics and microstructure to different quality coal is carried on, which offer the foundation theoretical for the low quality coal used in New Dry Process kiln craft.

为了拓宽水泥工业用煤的选择范围，本文结合干法水泥生产过程，进行了针对分解炉内不同质煤的着火特性、动力学和微观结构问题的研究，希望能为劣质煤在干法水泥生产中应用提供理论依据。

The microstructure and mechanical properties of AlTiFeNiCuCrx with different Cr content have been studied.

本文研究了不同Cr含量的AlTiFeNiCuCrx多主元高熵合金的微观组织和力学性能特点。

Traditional theory of chemical diffusion in solid states can not describe the relation of diffusion fluxes and diffusion-induced stresses because the research subject of the traditional theory is the diffusing atom or atomic flux, not the volume unit in the interdiffusion field.

传统固体化学扩散理论的研究对象是扩散的原子或原子流，并不关心互扩散区域内微观体积单元的变化，因此无法描述原子扩散流与应力之间的关系。

The effect of small amount of Mn and Zr on the microstructure and mechanical properties of Mg-13%Gd and Mg-9%Gd-4%Y alloys was studied.

摘 要：研究了微量Mn、 Zr对Mg-13％Gd和Mg-9％Gd-4%Y合金铸态和挤压后的微观组织及力学性能的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。