前言

Objective Bone Mesenchymal Stem Cells,residing in bone marrow,Which is multipotent stem cell that can differentiate to many types.

前言 骨髓间充质干细胞是存在于骨髓中的一种具有多向分化潜能的干细胞。

Second, the thesis works on the preparations, procedures and impact of this national assembly.

前言部分，对学术界研究民国公务员制度的成果做了系统的梳理。

I have the detailed introduction in nether foreword.

我在下面的前言中有详细的介绍。

Beside the introduction, concerning the background and meaning of selected title, several studying prerequisites and assumptions, the contents and structure, the train of thought and method, domestic and international research overview and document reviewing, etc. this text divides three chapters altogether, its main content is as follows: the inevitability of developing commercial nonproprietary mutual funds, the superiority analysis of this fund, and what is and how to manage the latent difficulties operating this fund, etc.

除前言对选题背景与意义、研究的若干前提与假设、研究的思路与方法、国内外研究概况与文献回顾以及论文的基本结构等内容进行阐述外，本文共分三章，其主要研究涉及：商业银行发展自营投资基金的必然性，商业银行自营投资基金的优势及面临的问题的分析、对商业银行发展自营投资基金业务的建议，等等。

It is common that reinforced concrete bridges are damaged with steel corrosion which not only reduces the strength of structures but also changes their failure mode if there exists nonsymmetry corrosion developed to some extent. Nonsymmetry corrosion can translate ductile fracture into brittle failure and translate flexural failure into torque failure, etc.

前言钢筋锈蚀是钢筋混凝土桥梁结构中最常见的一种损伤形式，钢筋锈蚀不仅削弱钢筋有效面积，而且能够引起钢筋体积膨胀，使混凝土保护层开裂，为腐蚀介质提供更加便易的入侵渠道，从而加速结构损伤，导致结构提前破坏。

This thesis is divided into six parts. The first chapter is preface, the current status of research in the inverse problems for parabolic partial differential equations is reported; the second chapter is "regularization methods for numerical differentiation and their applications ", in this chapter we investigate many regularization methods from a viewpoint of regularization theory and algorithm, some applications in the inverse problems for parabolic partial differential equations are given; the third chapter is "spectral regularization methods". Based on Fourier analysis, within the framework of regularization theory, we apply the spectral methods to some ill-posed problems. Many numerical experiments are done in order to show the validity of the methods; the fourth chapter is devoted to wavelet dual least squares method and a revised wavelet method; in the fifth chapter,we combine finite difference method with method of lines and apply it to the backward heat conduction problem in time; in the sixth chapter "identification problems for unknown source ", the essence and the degree of two problems related to source identification are pointed out, at the same time, some numerical methods are reported.

本文分为六个部分，第一章前言简要分析了国内外抛物型偏微分方程反问题的研究现状；第二章数值微分的正则化及其应用从正则化理论和算法的角度出发，考察了许多正则化方法，还给出了数值微分在抛物型偏微分方程反问题的一些应用；第三章谱正则化方法是在Fourier分析的基础上，在一般正则化理论的框架下，给出了这种方法在各种不适定问题中的应用，数值实验表明谱方法是有效的；第四章研究了小波对偶最小二乘方法和改进的小波方法；第五章主要研究了有限差分方法结合线方法在时间反向热传导问题中的应用；第六章是未知源识别问题，主要指出了两类未知源问题的不适定程度和不适定本质，同时报告了一些数值方法。

The student may pursue only a few of these, but he profits by the intellectual tradition of the place, and acquires a grasp of principles that gives to him that frame of mind which Newman described in the opening quotation to this section. Lines 3-5, Para.9

学生可能只会从事其中的几个分支，但他们会得益于从这一领域思维方式，且就像纽曼在本章节前言中提及的那样，他们会最终养成一些理解方式和思维模式。

In vector optimization one investigates optimal elements such as minimal, strongly minimal, properly minimal or weakly minimal elements of a nonempty subset of a partially ordered linear space.

前言在向量最优化中，人们研究偏序线性空间中非空子集的最优元，比如极小元，强极小元，真极小元或者弱极小元。

This thesis is divided into four chapters. Chapter One introduces the concept of literary images and the theory of Orientalism while briefly taking stock of recent Australian fictions about China.

论文共分四章，第一章为"前言"，一方面简单介绍了形象的概念和东方主义理论，另一方面对当代澳大利亚作家书写中国的情形作一概述。

The recirculating cooling water of iron and steel corporation in the iron making,steel making,casting machine and rolled iron plants,it plays an essential orle in enterprise.

1前言水是人类赖以生存和进行工农业生产，保持国民经济可持续发展的不可替代的极其重要的资源。在钢铁工业中，水是重要的能源动力介质。

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