材料科技与工程专业英语部分复习资料

五选一：

1.“ Materials science ” involves investigating the relationships that exist between the structures and properties of materials. In contrast, “Materials engineering ”is, on the basis of these structure-property correlations ,designing or engineering the structure of a material to produce a predetermined set of properties.材料科学涉及材料到研究材料的结构和性质的关系。相反，材料工程是根据材料的结构和性质的关系来设计或操纵材料的结构以求制造出一系列可预定的性质。

2. Virtually all important properties of solid materials may be grouped into six different categories: mechanical, electrical, thermal, magnetic ,optical, and deteriorative.实际上，所有固体材料的重要性质可以概括分为六类：机械、电学、热学、磁学、光学和腐蚀性。

3.In addition to structure and properties, two other important components are involved in the science and engineering of materials ,namely ” processing ”and” performance”.除结构与特征外，材料科学与工程还包括另外两项重要的研究内容，即（材料的）加工与性能。

4.The more familiar an engineer or scientist is with the various characteristics and structure-property relationships ,as well as processing techniques of materials, the more proficient and confident he or she will be to make judicious materials choices based on these criteria.工程师与科学家越熟悉材料的各种性质、结构、功能之间的关系以及材料的加工技术，根据以上的几个原则，他或她对材料的明智选择将越来越熟练和精确。

5.On only rare occasion does a material possess the maximum or ideal combination of properties. Thus ,it may be necessary to trade off one characteristic for another.只有在少数情况下材料才具有最优或理想的综合性质，因此，有必要对材料的性质进行平衡。

四选一：

1.直到最近，科学家才终于了解材料的结构要素与其特性之间的关系。It was not until relatively recent times that scientists came to understand the relationship between the structural elements of materials and their properties .

2.材料工程学主要解决材料的制造问题和材料的应用问题。Material engineering mainly to solve the problem and create material application.

3.材料的加工过程不但决定了材料的结构，同时决定了材料的特征和性能。Materials processing process is not only to de structure and decided that the material characteristic and performance.

4.材料的力学性能与其所受外力或负荷而导致的形变有关。Material mechanical properties with the extemal force or in de deformation of the load.

四选一：

1．金属元素有许多有利电子，金属材料的许多性质可直接归功于这些电子。Metallic materials have large numbers of nonlocalized electrons，many properties of metals are directly attributable to these electrons.

2．许多聚合物材料是有机化合物，并具有大的分子结构。Many of polymers are organic compounds,and they have very large molecular structures.

3．半导体材料的典型特征介于导体材料（如金属、金属合金）与绝缘体（陶瓷材料和聚合体材料）之间。Semiconductors have electrical properties that are intermediate between the electrical conductors ( viz. metals and metal alloys ) and insulators ( viz. ceramics and polymers ).

4．生物材料不能产生毒性，并且不许与人体组织互相兼容。Biomaterials must not produce toxic substances and must be compatible with body tissues.