《機電專業英語》內容共13章，即機械基礎知識與部件、機械加工工具、機械加工、公差擬合與測量、鋼鐵及其制造、電的常識、電與電路、無線電通信與電器維修、電焊、能源、微機組裝與維護、自動化與機器人、電腦制圖。為便於讀者更好地利用《機電專業英語》，編者在每節後面都附有詳細的課文注釋和詞彙，希望對讀者有所幫助。
《機電專業英語》內容新穎、圖文並茂、通俗易懂、門類齊全、適應面廣，適合中等職業學校學生的實際水平。

Part One： Basic Knowledge of Machine and Mechanical Components
1.Basic Knowledge of Machine
2.Shaft
3.Shaft Accessories——Keys and Pins
4.Bearings
5.Screws
6.Worms， Worm Gears
7.Cam
8. Gears

Part Two： Machine Tools
1.Fixture and Jig
2.Reamer
3.Grinding Wheel
4.Boring Tool
5.Turning Tool
6.Cutting Tool

Part Three： Machining
1.Turning
2.The Lathe and Its Construction
3.Milling
4.Milling Machine
5.Grinding
6.Bench Work

Part Four： Tolerance， Fits and Measurement
1.Limits of Size and Tolerance
2.Fits
3.Roughness
4.Dimension Measurement
5.Common Equipments
6.Measuring Tool

Part Five： Steel and Its Treatment
1.Kinds of Steel
2.Heat Treatment
3.Casting
4.Forging
5.Flow Control Valve
6.Concept of Quality - Historical Background
7.Quality Management Organizations and Awards

Part Six： Basic Knowledge of Electicity
1.The Importance of Electricity
2.Introduction
3.Electric Charge
4.Electric Current
5.Electric Field
6. Electric Potential
7.Electromagnetism

Part Seven： Electricity and Electric Circuits
1.Generation
2.Uses
3.Electric Circuit 1
4.Electric Circuit 2
5.Supplementary Materials： Circuits and Circuit Components
6.Transistor
7.How a Transistor Works

Part Eight： Radio Communication and Electric Maintenance
1.Radio
2.How Radio Waves Travel
3.Digital Transmission
4.Basic Knowledge of Electric Maintenance
5.Commonly Used Tools
6.Ordinary Instruments

Part Nine： EIoetdc Welding
1.Basic Knowledge of Electric Welding
2.Types of Welding
3.Electric Arc Welding
4.Electrode Holder
5.Welding Helmets
6.Safety Articles
7.The Welding History and New Development

Part Ten： Energy
1.Energy
2.Solar Energy
3.Solar Energy Using
4.Wind Power
5.History of Wind Power
6.Hydropower
7.Hydroelectric Power

Part Eleven： Microcomputer Assembly and Maintenance
1.Introduction
2.Main Components
3.Structure of Computer Systems
4.Networking and the Internet
5.Information Technology
6.Information Age

Part Twelve： Automation and Robots
1.Automation
2.Current Emphasis
3.Historical Perspective of Control Engineering
4.The Transmitter of Radio Controlled Toys
5.Basic Knowledge of Robot
6.Industrial Robots

Part Thirteen： Working Drawings
1.Working Drawings 1
2.Working Drawings 2
3.Basle Knowledge of CAD/CAM
4.The Application of CAD/CAM
5.The CAD/CAM Marketplace Today
6.Computer Plotting

Most metallic materials allow phase transformation in the mud state after the shaping processwithout changing the general geometry， which makes it possible to control the structure and thus theproperties within rather wide limits， practical technical operations， which are associated with suchphase transformations， are called heat treatment. There are three main operations in the heat treat-ment of steel ： hardening， tempering， and annealing.
The hardening operation consists of heating the steel above its critical range and then quenchingit， that is rapidly cooling in a suitable medium such as water， brine， oil， or some other liquid. Havingbeen hardened，the metal must be given a tempering treatment which consists of reheating the hard-ened steel to a temperature below the critical range， holding at this temperature for some time andthen followed by cooling in water， oil or air.
The critical points or temperatures are the temperatures at which a certain change takes place inthe physical condition of the steel. These points are very important because in order to properlyharden a piece of steel， it must be heated to a temperature above the upper critical point. Havingknown the critical points for certain steel， we can easily control the heat in the furnace.Gas， oil，and electric furnaces are the most commonly used for heat treating metals.
Annealing is the uniform heating of a metal above usual hardening temperatures， followed byvery slow cooling. Annealing may be carried out either to soften a piece that is too hard to machineor to remachine a piece that has already been hardened. Annealing also relieves internal stressesproduced by machining.
Nomalizing is to heat the steel slowly to about 30℃ above its upper critical temperature， thenfollowed by cooling in still air. The process is applied to achieve the best combination of mechanicalproperties when it is undesirable for the material to be in the softest possible condition.

《機電專業英語》是中等職業教育國家規劃教材，是根據教育部2001年頒發的《中等職業學校機電專業英語教學基本要求》編寫的。本書也適合作為中職自學考試和崗位培訓、技術等級考核培訓等的教學用書。根據中等職業學校學生的情況及國內外教材編寫的經驗，沒有在本書引入晦澀難懂的理論。敘述上深入淺出，突出基本概念和應用，力爭做到“通俗易懂，好教好學”。
本書內容共13章，即機械基礎知識與部件、機械加工工具、機械加工、公差擬合與測量、鋼鐵及其制造、電的常識、電與電路、無線電通信與電器維修、電焊、能源、微機組裝與維護、自動化與機器人、電腦制圖。為便於讀者更好地利用本書，編者在每節後面都附有詳細的課文注釋和詞彙，希望對讀者有所幫助。
《機電專業英語》內容新穎、圖文並茂、通俗易懂、門類齊全、適應面廣，適合中等職業學校學生的實際水平。
在本書編寫過程中參考了大量的文獻資料，在此對其作者一一表示感謝。
由於編者的知識和能力都很有限，加之經驗不足，書中難免有不足之處，敬請讀者批評指正。本書的順利編寫也得到了河南大學趙會婷及王振紅的幫助。在此特向他們表示衷心的感謝。