专业英语课件 3

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《专业英语》课件(3)1-Logical Variable and Flip-flop

专业英语
2
2） whose 用来指人或物，（只用作定语若指物，它）用来指人或物，（只用作定语, 若指物，，（只用作定语还可以同of 互换）例如：还可以同 which互换）。例如：互换 They rushed over to help the man whose car had broken down. 那人车坏了，大家都跑过去帮忙。那人车坏了，大家都跑过去帮忙。 Please pass me the book whose （of which） cover is ） green. 请递给我那本绿皮的书。请递给我那本绿皮的书。
定语从句语法专题
定语从句在句中做定语，修饰一个名词或代词，定语从句在句中做定语，修饰一个名词或代词，被修饰的名词词组或代词即先行词。被修饰的名词词组或代词即先行词。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）现在先行词之后，由关系词（关系代词或关系副词）引出。引出。关系代词有：关系代词有：who, whom, whose, that, which等。等关系副词有：关系副词有：when, where, why等。等
专系副词可代替的先行词是时间、关系副词可代替的先行词是时间、地点或理由的名在从句中作状语。词，在从句中作状语。
1）关系副词when, where, why的含义相当于介词 which\” ）关系副词的含义相当于\“介词的含义相当于介词+ 结构。例如：结构。例如： There are occasions when （on which） one must yield. ）任何人都有不得不屈服的时候。任何人都有不得不屈服的时候。 Beijing is the place where（in which） I was born. （）北京是我的出生地。北京是我的出生地。 Is this the reason why （for which） he refused our offer? ）这就是他拒绝我们帮助他的理由吗？这就是他拒绝我们帮助他的理由吗？

大学英语专业语法课件3-限定词Determ

• Quantifiers: Quantifiers are words or phrases that indicate the quantity or amount of something. Common quantifiers include words such as "many," "few," "several," "a lot of," etc.
Types of determiners: There are different types of determiners, including articles, demonstratives ("this," "that," "these," "those"), quantifiers ("some," "any," "many," "few"), and possessives, each serving a specific function in relation to the noun.
Classification
Qualifiers can be divided into two main categories: adjectives and adverbs. Adjectives modify nouns or pronouns, adding descriptive details such as color, size, shape, age, etc. Adverbs modify verbs, adjectives, or other adverbs, adding details such as time, place, manner, degree, etc.

建筑工程专业英语课件专业英语第3单元

Text A Components of a Building
Construction of Foundation Foundation is a very important part of a building. Foundation
engineering is a special subject. A foundation engineer should know how to examine the soil profile and arrive at a suitable foundation. The following are some of the different types of foundation generally used:
1. Planning the orientation, layout and dimension of the rooms of the building
2. The preparation of the features to make the building attractive Work of this nature for small buildings may be taken by nonarchitects also. However, the construction of a building should always be carried out under the supervision of a qualified person. We will now briefly examine the construction of the different components of buildings.
Text A Components of a Building

英语专业现代大学英语3课件brother's_death

record of what she encountered in。This book is a memoir of grief about the auther,And this text is one of the passage of this book.
Part one (1~6):
It is a description of a parade of Civil War soldiers in whom eyes banished happiness and a funeral about my brother who had died of AIDS at 31.
Part three (17~26): The grief of the auther about
her brother's death make him
know what grief is. Part four (27~28):
The author give us an example
to let us know we can't realize
others' feeling as same as
ourselves.
Death
funeral
AIDS Grief
comprehend
feelings
Conclusion
1.Don't always think that sadness is far away from ourselves because he's good at concealing himself. 2.Grief changes quickly,so we can't make sure whether we are sad everytime.

精品课件-精品课件--计算机专业英语(王莹)-unit3

高职高专“十三五”规划教材计算机类
计算机专业英语
Computer English
主编：王莹王月戴赟
副主编：
西安电子科技大学出版社
目
Unit 1 Computer Hardware
录
Unit 2 Computer Software
CONTENTS
Unit 3 Computer Network
Unit 4 Multimedia
3. Listen to the dialogue and choose the best responses to what you hear. 5. A. Maybe.
B. The same to you.
C. Where are you going?
6.
D. OK. I’ll visit my parents. A. Sorry, I’m a stranger here.
and
7 of the world, or for no apparent reason at all. Don’t be too 8 when your baby cries and you aren’t able to console him or her 9 :
crying is one way babies shout out stimuli when they're 10 .
3. L1i.stAe.n It’o mthfelydiinaglobgaucekatnodmocrhrooows.e the best responses to what you hear.
B. See you next time.
C. It’s my pleasure.

茶艺专业英语教学课件Unit 3 Black Tea

(9) During the 17th century, drinking tea became fashionable among Britons, who started largescale produced(生产) and commercialization of the plant in India to bypass the Chinese monopoly.
(6) Tea may be drinked(喝) early in the day to heighten calm alertness.
(7) Green tea being the most ubiquitous choice of healthy drinks across the globe, it is known for its charecteristic(特性) that protects against sun damage and skin cancer.
Black Tea
I . Focus on the topic II. Vocabulary study I III. Reading one IV. Task-driven practice V. Reass the following questions with your partner.
(11) Through the centuries, a variety of techniques for processing(加工) tea, and a number of different forms of tea, were developed.
(12) Tea caddies and containers also became necessary to keep the tea and conserve its flavour(味道).

四川大学--化工专业英语--课件3

We must lubricate bearings. Bearings must be lubricated．
我们从中可以看出：左栏的句子由于加了主语稍显拖
沓平淡，有的句子喧宾夺主。有的句子加了不必要的人称
主语，所以，无论从语言修辞的角度，还是从传递信息的
角度看，左栏的句子都是不够“科学”的。只有译成右栏
Attention must be paid to the working temperature of the electric machine.
You must pay attention to the working temperature of the electric machine.
比照后一句主动性强，语气生硬，一般在科技问题中不采用。
可以利用主动形式表被动
These products sell like hot cakes. (sell=are sold) 这些产品十分畅销。 The clock winds up at the back. (winds up= can be wound up) 这个钟在反面上发条。 The book is printing. (is printing= is being printed) 这本书正在印刷。
➢ Internal pores or defects within a solid body may originate from, for example, the packing of powder particles, from gas evolution or shrinkage during the solidification of castings.
二、科技英语句法的特点

《金融专业英语》课件-Chapter 3 Financial Instruments

CaБайду номын сангаасh
instruments （现金工具）
The values of cash instruments are influenced and determined by the markets and they can be securities that are easily transferable into cash.
Derivative
Instruments （衍生工具）
The values and characteristics of derivative instruments are based on the vehicle’s underlying components, such as assets, interest rates or indices.
Example of commercial paper
A retail firm is looking for short-term funding to finance some new inventory for an upcoming holiday season.
The firm needs $10 million and offers investors $10.1 million in face value of commercial paper in exchange for $10 million in cash, according to prevailing interest rates. In effect, there would be a $0.1 million interest payment upon maturity of the commercial paper in exchange for the $10 million in cash, equating to an interest rate of 1%. This interest rate can be adjusted for time, contingent on the number of days the commercial paper is outstanding.

专业英语课件Unit 3

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机电专业英语徐存善主编
2. For turning operations, the lathe uses a single-point cutting tool, which removes metal as it travels past the revolving workpiece. 译文：在车削操作中，车床用一个单刃切削刀具在旋转的工件上进行金属切削。说明：句中句中which removes metal as it travels past the revolving workpiece.是非限制性定语从句，对a single-point cutting tool作补充说明作用。 turning ['tə:niŋ] n. 转向；旋转；回转；转弯处v. 旋转（turn的ing形式） 1) related phrases：turning moment 转矩；turning machine 车床 2）The top is turning like a screw. 那顶端象螺丝一样地旋转着。 3）Spin the pendulum round by turning the red knob. 转动红色的把手使钟摆开始转动。
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机电专业英语徐存善主编
Grinding Grinding makes use of abrasive particles to do the cutting. Grinding operations may be classified as precision or nonprecision, depending on the purpose. Precision grinding is concerned with grinding to close tolerances and very smooth finish. Nonprecision grinding involves the removal of metal where accuracy is not important.

Unit 03 Automobile Engines 汽车专业英语教学课件

Unit 3 Automobile Engines
Engines have at least two valves per cylinder, one intake valve and one exhaust valve. Many newer engines are using multiple intake and exhaust valves per cylinder for increased engine power and efficiency[4].
Unit 3 Automobile Engines
The crankshaft is located below the cylinders on an inline engine, at the base of the V on a V-type engine and between the cylinder banks on a flat engine[3]. As the pistons move up and down, they turn the crankshaft just like your legs pump up and down to turn the crank that is connected to the pedals of a bicycle.
Unit 3 Automobile Engines
A common configuration is to have one camshaft located in the engine block with the lifters connecting to the valves through a series of linkages. The camshaft must be synchronized with the crankshaft so that the camshaft makes one revolution for every two revolutions of the crankshaft. In most engines, this is done by a "Timing Chain" (similar to a bicycle chain) that connects the camshaft with the crankshaft.

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e.g. The number of available electron states in some of the electron shells and subshells
Ⅱ- THE PERIODIC TABLE
The electronegativity value for the elements
negative in sign for electrons and positive for protons;
neutrons are electrically neutral.
轨道

电子
Ⅰ- ATOMIC STRUCTURE
2.1 FUNDAMENTAL CONCEPTS
• Masses for these subatomic particles are infinitesimally (Immeasurably or incalculably minute) small; protons and neutrons have approximately (about) the same mass, 1.67× 10-27 kg, which is significantly larger than that of an electron, 9.11 × 10-31 kg.
• These topics are reviewed briefly, under the assumption that some of the material is familiar to the reader.
What should you be able to do after studying this chapter?
• All the elements have been classified according to electron configuration in the periodic table
• Each chemical element is characterized by the number of protons in the nucleus, or the atomic number (Z).
• The atomic mass (A) of a specific atom may be expressed as the sum of the masses of protons and neutrons within the nucleus.
Why study atomic structure and interatomic
bonding?
• An important reason to have an understanding of interatomic bonding in solids is that, in some instances, the type of bond allows us to explain a material’s properties.
Technical English
Atomic Structure and Interatomic Bonding
Covalent Bond(SiO2 B2O3)
Metallic bond
Learning Objectives
1. Name the two atomic models cited, and note the differences between them.
• This dramatic (significant) disparity (difference) in properties is directly attributable to a type of interatomic bonding found in graphite that does not exist in diamond
This micrograph, which represents the surface of a gold specimen, was taken with a sophisticated （complex）atomic force microscope (AFM). Individual atoms for this (111) crystallographic surface plane are resolved. Also note the dimensional scale (in the nanometer range) below the micrograph.
• For example, consider carbon, which may exist as both graphite and diamond. Whereas graphite is relatively soft and has a ‘‘greasy’’ feel to it, diamond is the hardest known material.
Pauling近似能级图
(1) Principal Quantum number
These shells are designated by n=1,2,3…, which correspond, respectively, to the letters K,L,M….
The quantum number is related to the distance of an electron from the nucleus or its position.
• Although the number of protons is the same for all atoms of a given element, the number of neutrons (N) may be variable（changeable）.
• Thus atoms of some elements have two or more different atomic masses, which are called isotopes.
2. Describe the important quantum-mechanical principle that relates to electron energies.
3. (a) Briefly describe ionic, covalent, metallic, hydrogen, and van der Waals bonds. (b) Note what materials exhibit each of these bonding types.
Pauling近似能级图
2.2 Electrons in ATOMS
Quantum numbers
Using wave mechanics, every electron in an atom is characterized by four parameters called quantum numbers.
(2) Angular Quantum Number
The number of these subshells is restricted by the magnitude of n.
The subshell is denoted by a lowercase letter- an s, p, d, f, which is related to the shape of the electron subshell.
（4）Spin quantum number
Associated with each electron is a spin moment, which must be oriented either up or down, for which two values are possible (±1/2)
Name and explain the primary or chemical bond found in solids.
ATOMIC STRUCTURE
• 2.1 FUNDAMENTAL CONCEPTS
• Each atom consists of a very small nucleus（pl. nuclei ） composed of protons and neutrons, which is
s轨道
p轨道
d轨道
（3）Magnetic quantum number
The third quantum number describes the number of energy states for each subshell, which is restricted by 2l+1.
E.g. l＝1，ml 可以为 0，1三个不同的取向，用px, py, pz 表示。 l＝2, ml 可以为 0，1 , 2, 五个不同的取向，用dxy, dyz, dxz, dx2-y2, dz2表示。
Introduction
• Some of the important properties of solid materials depend on geometrical atomic arrangements, and also the interactions that exist among constituent (component) atoms or molecules. This chapter, by way of preparation for subsequent discussions, considers several fundamental and important concepts, namely: atomic structure, electron configurations in atoms and the periodic table, and the various types of primary and secondary interatomic bonds that hold together the atoms comprising (consisting of ) a solid.

专业英语课件 3

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