集中于...

These force you to focus and to look at things in different ways, both spatially and linguistically.

这些促使你集中注意于即从时间上又从语言学上等不同角度去观察事情。

This project studies the scale-dependent deformation behavior of the metal matrix composite, the void nucleation and void growth mechanisms at the micron/submicron scale. The main results are:(1) In prophase, growth and coalescence of the void embedded in the graded matrix are analyzed in detailed;(2) Based on the infinite solid model containing a micro-void, coupling effects of the void shape and the void size on the void growth are studied carefully, the results show that it seems to exist a critical equivalent void radius, which is associated with the material length. When radius of a microvoid is close to or smaller than the critical void radius, the micro-void growth rate is essentially eliminated;(3) The coupling effects of the particle shape and size on the mesoscopic stress fields within the particle and matrix are also investigated by introducing the conception of inclusion/matrix interfacial energy. The results show that the stress concentration factors within the particle and on the matrix/particle interface are also strongly size-dependent,so the void nucleation mechanism is size-dependent.(4) By employing a specific orthogonal curve coordinate frame and a 'kernel function' conception, a 'unified method'solving the spheriodal and spherical void problems is suggested; by this unified method, size-dependent plastic potentials of the porous materials containing the spheriodal or spherical voids are obtained, which extend the traditional Gurson model for the spherical void and GLD model for the spheriodal voids to the micron scale.(5) Based on the RVE model containing the spheriodal or spherical particles, the influences of the particle shape and size on the size-dependent mechanical behavior of metal matrix composite are studied.

中文摘要：本项目对金属基复合材料在微细观尺度下的尺度相关变形行为、孔洞形核及长大的机理和模型进行了研究，取得了如下主要结果：1）在前期研究中，探讨了基体的梯度分布对孔洞长大和聚合的影响；2）基于含孔洞的无限大体模型，探讨了孔洞形状和孔洞尺寸对其长大的耦合作用，结果表明：可能存在一个与材料特征长度相关的临界孔洞尺寸，当椭球孔洞的等效半径小于临界孔洞半径时，孔洞的长大受到明显抑制；3）通过引入基体/夹杂界面能的概念，分析了夹杂尺寸、夹杂形状对材料细观应力场的耦合影响，结果表明：颗粒内部和界面上的应力集中因子强烈地依赖于夹杂的尺寸和形状，因此，孔洞的形核机理是尺寸相关的；4）采用一种特殊的正交曲线坐标系和引入"核函数"的概念，"统一"地得到了含椭球和球形孔洞的材料的尺寸相关塑性势，它将传统的Gurson球形孔洞模型和GLD椭球孔洞模型推广到微尺度范围；5）基于含椭球和球形夹杂的体胞模型，初步研究了夹杂形状、夹杂尺寸对金属基复合材料尺寸相关力学行为的影响。

In optical character recognition, a misalignment of the first character of a line with respect to the left margin.

在光符识别技术中，某行的第一个字符相对于左页边排列不齐的现象。注意，注意力集中

Studio manager on the mixing desk, let's open up the theater and hear from Bill Thomson in our Cambridge studio.

即把存储于个人电脑、移动电话和其他设备上的大量信息和处理器资源集中在一起，协同工作。

A mathematical cascade model of 35 kV power transmission line with concentrated parameter is developed and a multiple modules coupling model of this power transmission system fit for digital real-time simulation is further presented on the basis of known model of synchronous machine and composite load.

建立了35kV输电线正常运行状态级联集中参数数字仿真的数学模型，并在已知同步发电机、变压器和综合负载模型的基础上，进一步提出了适合于35kV馈电系统数字实时仿真的多模块耦合模型，同时给出了相应的数字积分方法。

OMAC-The Open Modular Architecture Controls Users' Group is an affiliate organization of ISA - The Instrumentation, Systems and Automation Society - and works to collectively derive common solutions for both technical and non-technical issues in the development, implementation, and commercialization of open, modular architecture control technologies, and to facilitate the accelerated development and convergence of industry and government developed OMAC technology guidelines to one set that satisfies common use requirements.

OMAC—开放式模块架构控制用户集团是ISA仪器、系统和自动化协会）的一个组成团体，致力于为开放式模块架构控制技术的开发、执行和商业化中的技术和非技术问题提供通用解决方案，推动工业和政府指定的OMAC技术指导方针加速发展和集中成为一套满足普通使用需求的方针。

Through its small-size,it also privides with several high-effciency modul in use,which are produced in large size ERP.So that it adapts to the large-size store or multiple shop.

此系统规模小，集中了大型ERP系统中使用频率最高的几个模块，适用于较大的门市商店或者是连锁店。

If the answer was negative, the number of data that was included in the appointed neighborhood was counted.

现有的数据挖掘研究大多集中在发现适用于大部分数据的常规模式。

Discussion of the ongoing recession tends to focus on the nexus of housing and financial industry problems.

有关目前经济衰退的讨论倾向于集中在房地产市场和金融业问题的关系上。

It is found that these earthquakes are concentrated in the meizoseismal area. The direction appears north by west and depth is about 7 km.

结果显示：地震震中集中分布于郭家坝M3.8地震的极震区，方向呈北偏西，震源深度约7km。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐