材料科学与工程专业英语 (1)
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材料专业英语
Phase Transformation Temperatures
• When temperature rises and pressure is held constant, a typical substance changes from solid to liquid and then to vapor. Transitions from solid to liquid, from liquid to vapor, from vapor to solid and visa versa are called phase transformations or transitions. Since some substances have several crystal forms, technically there can be solid to another solid from phase transformation.
材料专业英语翻译
主讲：林建国
材料科学与工程专业英语
Biblioteka Baidu
课程简介：
• 课堂6学时，课后14学时 • 考试：开卷，当堂完成
材料专业英语
主要内容及课时安排
• Introduction to materials science and engineering(4学时)
• Metallic materials and alloys（4学时） • Ceramics（2学时） • Composites（2学时） • Nanostructured materials（2学时）
材料专业英语
• Mass (m) is a fundamental measure of the amount of matter. Weight (w) is a
材料专业英语
Part 1 Introduction to materials science and engineering
• Unit 1 Physical and chemical properties of materials
• Unit 2 Mechanical properties of materials
材料专业英语
Density
• Mass can be thinly dsitrbuted as in a pillow, or tightly packed as in a block of lead.
• 质量可以像枕头似地稀疏地分布，也可以 像铅那样紧紧地堆积在一起。
• The space the mass occupies is its volume, and the mass per unit of volume is its density.
材料专业英语
Melting point: the phase transition temperature where a solid changes to a liquid
Boiling point: the temperature at which the vapor pressure of a liquid equals 1 atm (101.3 kPa)
材料专业英语
Unit 1 Physical and chemical properties of materials
• Physical properties are those that can be observed without changing the identity of the substance. The general properties of matter such as color, density, hardness, are examples of physical properties. Properties that describe how a substance changes into a completely different substance are called chemical properties. Flammability and corrosion/oxidation resistance are examples of chemical properties.
材料专业英语
Some materials, such as many polymers, do not go simply from a solid to a liquid with increasing temperature. Instead, at some temperature below the melting point, they start to lose their crystalline structure but the molecules remain linked in chains, which results in a soft and pliable material. The temperature at which a solid, glassy material begins to soften and flow is called the glass transition temperature.
材料专业英语
• In general, some of the more important physical and chemical properties from an engineering material standpoint include phase transformation temperatures, density, specific gravity, thermal conductivity, linear coefficient of thermal expansion, electrical conductivity and resistivity, magnetic permeability, and corrosion resistance, and so on. 磁导率
Phase Transformation Temperatures
• When temperature rises and pressure is held constant, a typical substance changes from solid to liquid and then to vapor. Transitions from solid to liquid, from liquid to vapor, from vapor to solid and visa versa are called phase transformations or transitions. Since some substances have several crystal forms, technically there can be solid to another solid from phase transformation.
材料专业英语翻译
主讲：林建国
材料科学与工程专业英语
Biblioteka Baidu
课程简介：
• 课堂6学时，课后14学时 • 考试：开卷，当堂完成
材料专业英语
主要内容及课时安排
• Introduction to materials science and engineering(4学时)
• Metallic materials and alloys（4学时） • Ceramics（2学时） • Composites（2学时） • Nanostructured materials（2学时）
材料专业英语
• Mass (m) is a fundamental measure of the amount of matter. Weight (w) is a
材料专业英语
Part 1 Introduction to materials science and engineering
• Unit 1 Physical and chemical properties of materials
• Unit 2 Mechanical properties of materials
材料专业英语
Density
• Mass can be thinly dsitrbuted as in a pillow, or tightly packed as in a block of lead.
• 质量可以像枕头似地稀疏地分布，也可以 像铅那样紧紧地堆积在一起。
• The space the mass occupies is its volume, and the mass per unit of volume is its density.
材料专业英语
Melting point: the phase transition temperature where a solid changes to a liquid
Boiling point: the temperature at which the vapor pressure of a liquid equals 1 atm (101.3 kPa)
材料专业英语
Unit 1 Physical and chemical properties of materials
• Physical properties are those that can be observed without changing the identity of the substance. The general properties of matter such as color, density, hardness, are examples of physical properties. Properties that describe how a substance changes into a completely different substance are called chemical properties. Flammability and corrosion/oxidation resistance are examples of chemical properties.
材料专业英语
Some materials, such as many polymers, do not go simply from a solid to a liquid with increasing temperature. Instead, at some temperature below the melting point, they start to lose their crystalline structure but the molecules remain linked in chains, which results in a soft and pliable material. The temperature at which a solid, glassy material begins to soften and flow is called the glass transition temperature.
材料专业英语
• In general, some of the more important physical and chemical properties from an engineering material standpoint include phase transformation temperatures, density, specific gravity, thermal conductivity, linear coefficient of thermal expansion, electrical conductivity and resistivity, magnetic permeability, and corrosion resistance, and so on. 磁导率