unit1 Materials Science and Engineering

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在很大程度上
This knowledge, … has empowered them to fashion, to a large degree, the characteristics of materials. 把...塑造成, 改变 ...塑造成 塑造成, Thus, Thus tens of thousands of different materials have evolved with rather specialized characteristics ….. Empower sb. to do sth: 授权某人做某事 Para 2: The development of materials in society.
Part 1: Introduction
Para1
The importance of materials in society.
Para2
The development of materials in society.
Para3
The Relationship between Technology and Materials
性质性质??atthispointatthispointmaterialsutilizationwastotallyaselectionprocessthatisdecidingfromagivenratherlimitedsetofmaterialstheonethatwasbestsuitedforanapplicationbyvirtueofitspp此时材料的利用完全是一种选择的过程即从特定此时材料的利用完全是一种选择的过程即从特定有限的一组材料中根据特性确定最合适的一种有限的一组材料中根据特性确定最合适的一种ycharacteristic
What is materials science?
一门交叉学科
Material science is an interdisciplinary study that combines chemistry, physics, metallurgy, metallurgy engineering and very recently life sciences.
Material Science and engineering
Text Organization
According to the content, this text mainly contains the following two parts: Part 1: Introduction Part 2: What are Material Science and Engineering?
先驱( 先驱(者) 阶梯式的, 阶梯式的,逐步的
Para 3:The Relationship between Technology and Materials
Part 2
Materials Science and Engineering
Look through this part quickly with following four questions: • What is materials science? • What is materials engineering? • What are the four important components involved in material science and engineering?
此时,材料的利用完全是一种选择的过程,即从特定 此时,材料的利用完全是一种选择的过程, 有限的一组材料中根据特性确定最合适的一种 • At this point materials utilization was totally a point, selection process, that is, deciding from a given, rather limited set of materials the one that was best suited for an application by virtue of its characteristic. at this point 在这一点上 此时 在这一点上, materials utilization 材料的利用 that is,即, 就是 换句话说 就是说 , 就是, 换句话说, by virtue of 依靠,由于, 依靠,由于,因为 characteristic n,特性、特征 ,特性、
冶金学
Part 2 Materials science and engineering
One aspect of materials science involves studying and designing materials to make them useful and reliable in the service of humankind. It strives for basic understanding of how structures and processes on the atomic scale result in the properties and functions…
力求从基础上理解
Materials scientists are interested in physical and chemical phenomena … Adv,在这一点上 , In this regard it differs form physicals or chemistry …
Para 1: Materials mic structure involves electrons … and interactions with their nuclei. On an atomic level, structure encompasses the organization of atoms or molecules …
与...紧密联系 ...紧密联系
In fact, early civilizations have been designated by the level of their materials development (i.e. Stone Age, Bronze Age) 指定, 指定,命名 Para 1: The importance of materials in society.
Part 1: Introduction
adj.根深蒂固的, 深层的 adj.根深蒂固的, 根深蒂固的
Materials are properly more deep-seated in our culture ... deep….-virtually every segment of our everyday lives is influenced to one degree or another by materials.
adv.不同程度地 adv.不同程度地
Historically, Historically the development and advancement of societies have been intimately tied to the members’ abilities to produce and manipulate materials….
材料科学也重视开发和运用知识去理解材料的性质是如 可控地设计。 通过…..可控地设计 何通过…..可控地设计。 通过改变组成、 通过改变组成、结构和体表相材料加工的方式 改变组成
Part 2 Materials science and engineering “structure” is a nebulous term that deserves some explanation. (P4) In brief, the structure of a material usually relates to the arrangement of its internal components components.
预定的一组
In other words, materials engineering mainly deals with the use of materials in design and how materials are manufactured.
换句话说
• In materials science there is also an emphasis on developing and using knowledge to understand how the properties of materials can be controllably designed by varying the compositions, structures, and the way in which the bulk and surfaces phase materials are processed.
Part 1: Introduction It was not until relatively recent times that scientists came to understand the relationships between the structural elements of materials and their properties. (P4)
Part 1: Introduction
有权使用
The earliest humans has access to only a very limited number of materials, those that occur naturally ... With time they discovered techniques for producing materials that had properties superior to those of the natural ones……
What is materials engineering?
设计,策划( 设计,策划(n-v) )
Materials engineering is, on the basis of those structure properties correlations, designing or engineering the structure of a material to produce a predetermined set of properties.
比…更好
Furthermore, it was discovered that the properties of a material could be altered by heat treatments and by the addition of other substances.
性质
Para 2: The development of materials in society.
Part 1: Introduction
生活,生存 生活 生存
The development of many technologies that make our existence so comfortable has been intimately associated with the accessibility of suitable materials. been intimately associated with :与…紧密关联 与 紧密关联 Advancement in the understanding of a material type is often the forerunner to the stepwise progression of a technology.
包含
Para 3: Materials Engineering.
Part 2 Materials science and engineering The next large structural realm, …, is termed “microscopic” meaning that which is subject to direct observation using some type of microscope.
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