材料科技英语考试句子翻译复习
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1. Material science involves investigating the relationship that exists between the structures and properties of materials. In contrast，“material engineering”is on the basis of the structure-property correlations，designing or engineering the structure of a material to produce a predetermined t of properties
材料科学是研究材料的结构和性能之间存在的关系，相反，材料工程是在这些结构性能相互关系的基础上，设计和构建材料的结构来实现一系列的预定的性能。
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ram是什么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，固体材料的所有重要材料可以被分成六个目录，力学，热学，磁学，光学和失效。
3. In addition to structure and properties, two other important components are involved in the science and engineering of materials，namely体恤的意思“processing”and “performance”.
除了结构和性质，还有两个重要的材料科学与工程的性质是材料加工材料和性能。
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 bad on the criteria
工程师和科学家对于材料的各种性质特征和结构性能越熟悉，他们基于这种标准而对材料做出的明智选择将更加熟练和自信。
5. On only rare occasion does a material posss the maximum or ideal combination of properties. Thus，it may be necessary to trade off one characteristic for another
只有在极少数新情况下，才能在材料的加工过程中，将各种性能最大化、理想化地结合起来，因此，权衡材料的一个性能和另一个性能是很有必要的。
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6. An object will float in water if its density is less than the density of water and sink if its density is greater than that of water. Similarly, an object with specific gravity less than one will float and tho with a specific gravity greater than one will sink.
一个物体的密度比水小时，它会浮在水上，比水大时，它会下沉。类似地，当一个物体的比重大于一，它就会上浮，比重小于一，它就会下沉。
7. Materials that cau the lines of flux to move farther apart, resulting in a decrea in magnetic flux density compared with a vacuum, are called diamagnetic. Materials that concentrate magnetic flux by a factor of more than one but less than or equal to ten are called paramagnetic; materials that concentrate the flux by a factor of more than ten are called ferromagnetic
反磁性体是一类会引起磁力线疏离导致磁通量比真空中低的材料。顺磁性体是会引起磁力线密度成倍增加，倍率系数大于1，小于等于10的材料。铁磁性体是磁力线密度增加倍率超过10的材料。
8. Certain ferromagnetic materials, especially powdered or laminated iron, steel, or nickel alloys, have μ中国翻译网r that can range up to about 1000000. Diamagnetic materials have μr less than one, but no known substance has relative permeability much less than one.
一些铁磁性材料，尤其是粉末状或层压状的铁、不锈钢或镍基合金的相对磁导率μr可达1000000。反磁性材料的相对磁导率μr小于1。已知材料中尚未发现相对磁导率比1小很多的。
9. When a paramagnetic or ferromagnetic core is inrted into a coil, the inductance is multiplied by μ英文书信格式范文r compared with the inductance of the same coil with an air core.
当线圈内插入一个顺磁性体或铁磁性体芯，其电感是空气芯的相同线圈电感的μr倍。
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10.化学性质是用来描述一种物质是怎样变成另外一种完全不同的物质的性质。
Properties that describe how a substance changes into a completely different substance are called chemical properties.
11.相变是一种物理性质，并且物质存在四种相：固相、液相、气相和等离子体。
典雅的意思Pha transformation is a physical property of matter, and matter can exist in four pha: solid, liquid, gas and plasma.
12.cfa培训当温度低于熔点时，聚合物的晶体结构破坏，但其分子仍然连接在分子链上，从而形成一种柔软和柔顺性材料。
At the temperature below the melting point, polymers start to lo their crystalline structure but the molecules remain linked in chains, which results in a soft and pliable material.
13.在工程应用中，渗透率通常用相对值而不是绝对值来表示。 美国派4字幕
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In engineering applications, permeability is often expresd in relative, rather than in absolute, terms.
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14.通常，温度低于室温的时侯，金属合金的强度性质降低，而延展性、破碎韧度和拉伸性能增强。
Temperature above room temperature usually cau a decrea in the strength properties of metallic alloys.
15.从材料的角度来说，应力是一种在材料内部所分布的力，它可以平衡所施加的负荷并与其发生相互作用。
From the perspective of what is happening within a material,stress is the internal distribution of forces within a body that balance and react to the loads applied to it.
16.工程应变可定义为:所施加的力方向上的材料的改变量与材料原始长度的比值。
Engineering strain is defined as the amount of deformation in the direction of the applied force divided by the initial length of the material.
17.高强度和高延展性的材料比低强度和低延展性的材料的韧性高。
A material with high stress and high ductility will have more toughness than a material with low strength and high ductility.
