求一篇3000字左右机械方面的英语文章，要求有出处，

1. 求一篇3000字左右机械方面的英语文章，要求有出处，

A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by machining, which is the selective removal of metal. The term machine tool is usually reserved for tools that used a power source other than human movement, but they can be powered by people if appropriately set up. Many historians of technology consider that the true machine tools were born when direct human involvement was removed from the shaping or stamping process of the different kinds of tools. The earliest lathe with direct mechanical control of the cutting tool was a screw-cutting lathe dating to about 1483.[1] This lathe "produced screw threads out of wood and employed a true compound slide rest".

The first machine tools offered for sale (i.e. commercially available) were constructed by one Matthew Murray in England around 1800.[2]

Contents [hide]
1 Overview 
2 Examples 
3 See also 
4 References 
5 Bibliography 
6 Further reading 
7 External links 
 

[edit] Overview
Machine tools can be powered from a variety of sources. Human and animal power are options, as is energy captured through the use of waterwheels. However, modern machine tools began to develop only after the development of the steam engine, which led to the Industrial Revolution. Today, most machine tools are powered by electricity.

Machine tools can be operated manually, or under automatic control. Early machines used flywheels to stabilize their motion and had complex systems of gears and levers to control the machine and the piece being worked on. Soon after World War II, the numerical control (NC) machine was developed. NC machines used a series of numbers punched on paper tape or punch cards to control their motion. In the 1960s, computers were added to give even more flexibility to the process. Such machines became known as computerized numerical control (CNC) machines. NC and CNC machines could precisely repeat sequences over and over, and could produce much more complex pieces than even the most skilled tool operators.

Before long, the machines could automatically change the specific cutting and shaping tools that were being used. For example, a drill machine might contain a magazine with a variety of drill bits for producing holes of various sizes. Previously, either machine operators would usually have to manually change the bit or move the work piece to another station to perform these different operations. The next logical step was to combine several different machine tools together, all under computer control. These are known as machining centers, and have dramatically changed the way parts are made.

From the simplest to the most complex, most machine tools are capable of at least partial self-replication, and produce machine parts as their primary function.

[edit] Examples
Examples of machine tools are:

Broaching machine 
Drill press 
Gear shaper 
Hobbing machine 
Hone 
Lathe 
Screw machines 
Milling machine 
Shaper 
Saws 
Planer 
Stewart platform mills 
Grinding machines 
When fabricating or shaping parts, several techniques are used to remove unwanted metal. Among these are:

Electrical discharge machining 
Grinding (abrasive cutting) 
Multiple edge cutting tools 
Single edge cutting tools 
Other techniques are used to add desired material. Devices that fabricate components by selective addition of material are called rapid prototyping machines.

Several regions of the United States became centers for machine tool development between 1800 and 1950, including Philadelphia, Pennsylvania; Cincinnati, Ohio; Rockford, Illinois; Providence, Rhode Island] Springfield, Vermont; Windsor, Vermont; Hartford, Connecticut; and Bridgeport, Connecticut.

2. 求一篇机械方面的英语文章中英文都有（1500中文，最好是有关模具的）

The British capital London (london) is located in the plains of south-east England, across the River Thames, 88 kilometers away from the mouth of the River Thames. 

     As early as 3,000 years ago, London was the then British place to live. BC 54 years, the Roman Empire's invasion of Great Britain Island, BC for 43 years, here was the main depot and the Romans built the first wooden bridge across the River Thames. At that time London was known as the "Lun at the end of neumatic." 

     After the 16th century, with the rise of British capitalism, London has expanded rapidly. AD 1500, London's population, however, 50000, 1600, the population to 20 million in 1700 to 700,000 18-19th century, London has become the world's largest financial and trade center. In 1900, London's population to 2 million. The 20th century, 60 years London had a population of 800 million, in 2001 a population of 7.188 million in London. 

  
Buckingham Palace is on the square in front of Queen Victoria Memorial 
  
     London, City of London is divided into administrative regions and 32 urban areas outside London, the 12 urban areas known as Inner London, the other 20 urban areas outside London, called. The City of London, inner London, outer London, Greater London pose. Greater London can be divided into the City of London, West London, East London, South District, and ports. City of London is the financial capital and trade center, west London is a British Royal Palace, the Prime Minister's official residence, the seat of Parliament and government ministries, East London workers in industrial zones and residential areas in Southern District, is a business and residential district, the port refers to the Tower of London Thames Qiaozhi River estuary area. Throughout the Greater London

3. 求一篇3000字左右机械方面的英语文章！！有中文更好

A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by machining, which is the selective removal of metal. The term machine tool is usually reserved for tools that used a power source other than human movement, but they can be powered by people if appropriately set up. Many historians of technology consider that the true machine tools were born when direct human involvement was removed from the shaping or stamping process of the different kinds of tools. The earliest lathe with direct mechanical control of the cutting tool was a screw-cutting lathe dating to about 1483.[1] This lathe "produced screw threads out of wood and employed a true compound slide rest".

The first machine tools offered for sale (i.e. commercially available) were constructed by one Matthew Murray in England around 1800.[2]

Contents [hide]
1 Overview 
2 Examples 
3 See also 
4 References 
5 Bibliography 
6 Further reading 
7 External links 

[edit] Overview
Machine tools can be powered from a variety of sources. Human and animal power are options, as is energy captured through the use of waterwheels. However, modern machine tools began to develop only after the development of the steam engine, which led to the Industrial Revolution. Today, most machine tools are powered by electricity.

Machine tools can be operated manually, or under automatic control. Early machines used flywheels to stabilize their motion and had complex systems of gears and levers to control the machine and the piece being worked on. Soon after World War II, the numerical control (NC) machine was developed. NC machines used a series of numbers punched on paper tape or punch cards to control their motion. In the 1960s, computers were added to give even more flexibility to the process. Such machines became known as computerized numerical control (CNC) machines. NC and CNC machines could precisely repeat sequences over and over, and could produce much more complex pieces than even the most skilled tool operators.

Before long, the machines could automatically change the specific cutting and shaping tools that were being used. For example, a drill machine might contain a magazine with a variety of drill bits for producing holes of various sizes. Previously, either machine operators would usually have to manually change the bit or move the work piece to another station to perform these different operations. The next logical step was to combine several different machine tools together, all under computer control. These are known as machining centers, and have dramatically changed the way parts are made.

From the simplest to the most complex, most machine tools are capable of at least partial self-replication, and produce machine parts as their primary function.

[edit] Examples
Examples of machine tools are:

Broaching machine 
Drill press 
Gear shaper 
Hobbing machine 
Hone 
Lathe 
Screw machines 
Milling machine 
Shaper 
Saws 
Planer 
Stewart platform mills 
Grinding machines 
When fabricating or shaping parts, several techniques are used to remove unwanted metal. Among these are:

Electrical discharge machining 
Grinding (abrasive cutting) 
Multiple edge cutting tools 
Single edge cutting tools 
Other techniques are used to add desired material. Devices that fabricate components by selective addition of material are called rapid prototyping machines.

Several regions of the United States became centers for machine tool development between 1800 and 1950, including Philadelphia, Pennsylvania; Cincinnati, Ohio; Rockford, Illinois; Providence, Rhode Island] Springfield, Vermont; Windsor, Vermont; Hartford, Connecticut; and Bridgeport, Connecticut.

4. 英文 机械 短文 求5篇 英文机械类短文

Mechanical engineering is a discipline of engineering that applies the principles of physics and materials science for analysis,design,manufacturing,and maintenance of mechanical systems.It is the branch of engineering that involves the production and usage of heat and mechanical power for the design,production,and operation of machines and tools.[1] It is one of the oldest and broadest engineering disciplines.
  The engineering field requires a vast understanding of core concepts including mechanics,kinematics,thermodynamics,materials science,and structural analysis.Mechanical engineers use these core principles along with tools like computer-aided engineering and product lifecycle management to design and analyze manufacturing plants,industrial equipment and machinery,heating and cooling systems,motorized vehicles,aircraft,watercraft,robotics,medical devices and more.
  这一篇是对机械工程的简单介绍
  这样的文章真不好找呢

5. 机械专业英语文章？

   
   　　在机械领域里,机械专业英语的特点是专业性强、范围广,重视逻辑性和条理性,因此,翻译机械专业英语工作对翻译者的翻译技能的要求也越来越高。下面是我带来的，欢迎阅读! 
   　 　 
   　　Drilling and Drills 
   　　钻削和钻头 
   
   　　Drilling involves producing through or blind holes in a workpiece by forcing a tool, which rotates around its axis, against the workpiece. 
   　　钻削就是通过迫使绕自身轴线旋转的切削刀具进入工件而在其上生成通孔或盲孔。 
   　　Consequently, the range of cutting from that axis of rotation is equal to the radius of the required hole. In practice, two symmetrical cutting edges that rotate about the same axis are employed. 
   　　因此从旋转轴线开始的切削范围等于所需孔的半径。实际上使用的是两条围绕相同轴线旋转的对称切削刃。 
   　　Drilling operations can be carried out by using either hand drills or drilling machines. The latter differ in size and construction. Nevertheless, the tool always rotates around its axis while the workpiece is kept firmly fixed. This is contrary to drilling on a lathe. 
   　　钻削作业既能采用手钻也能采用钻床来实现。钻床在尺寸和结构上虽有差别?然而始终都是切削刀具围绕自身轴线旋转、工件稳固定位的形式。这正好与在车床上钻孔相反。 
   　　 
   　　Twist drill. The twist drill is the most mon type of drill. It has two cutting edges and two helical flutes that continue over the length of the drill body, as shown in Fig.12.1. The drill also consists of a neck and a shank that can be either straight or tapered. 
   　　麻花钻。麻花钻是最常用的钻头型别。它有两条切削刃和两条沿钻头体全长连续的螺旋状出屑槽如图12.1所示。麻花钻还包括钻颈和钻柄钻柄可以是直的也可以是锥形的。 
   　　In the latter case, the shank is fitted by the wedge action into the tapered socket of the spindle and has a tang, which goes into a slot in the spindle socket, thus acting as a solid means for tran *** itting rotation. 
   　　锥形钻柄通过楔入动作安装在主轴的锥形轴孔中钻柄上还有柄舌插入主轴轴孔中的插槽从而作为传递转动的可靠方法。 
   　　On the other hand, straight-shank drills are held in a drill chuck that is, in turn, fitted into the spindle socket in the same way as tapered shank drills. 
   　　另一方面直柄钻头用钻头卡盘夹住接下来钻头卡盘则象锥形钻柄钻头一样安装在主轴轴孔内。 
   　　As can be seen in Fig.12.1, the two cutting edges are referred to as the lips, and are connected together by a wedge, which is a chisel-like edge. The twist drill also has two margins, which enable proper guidance and locating of the drill while it is in operation. 
   　　如图12.1所示两条切削刃就是钻唇通过凿子状边缘的楔形体连在一起。麻花钻还有两条导向边用于作业中钻头的正确导向和定位。 
   　　The tool point angle TPA is formed by the two lips and is chosen based on the properties of the material to be cut. The usual TPA for mercial drills is 118°, which is appropriate for drilling low-carbon steels and cast irons. 
   　　两条钻唇形成钻顶角并根据被钻削材料的效能来选取其大小。商品化钻头的钻顶角一般为118°这适用于钻削低碳钢和铸铁。 
   　　For harder and tougher metals, such as hardened steel, brass and bronze, larger TPAs 130°or 140° give better performance. The helix angle of the flutes of the monly used twist drills ranges between 24°and 30°. When drilling copper or soft plastics, higher values for the helix angle are remended between 35°and 45°. 
   　　对于更硬更韧的金属诸如淬火钢、黄铜和青铜更大的钻顶角130°或140°才能有更好的效果。麻花钻常用的出屑槽螺旋角范围为24°到 30°。钻削紫铜或软塑料时推荐采用更大的螺旋角35°到45°。 
   　　Twist drills are usually made of high-speed steel, although carbide-tipped drills are also available. The sizes of twist drills used in industrial practice range from 0.01 up to 3.25 in. 0.25 up to 80 mm. 
   　　虽然也有硬质合金刀尖的钻头麻花钻一般用高速钢制成。工业实际中使用的麻花钻尺寸范围为0.01到3.25英寸即0.25到80毫米。 
   　　 
   　　Core drills. A core drill consists of the chamfer, body, neck, and shank, as shown in Fig.12.2. This type of drill may have either three or four flutes and equal number of margins, which ensure superior guidance, thus resulting in high machining accuracy. 
   　　空心钻 空心钻包括斜面、钻头体、钻颈和钻柄 如图12.2所示。这类钻头可以有三条或四条出屑槽及相同数量的保证良好导向的导向边 这样使得加工有高精度。 
   　　It can also be seen in Fig.12.2 that a core drill has flat end. The chamfer can have three or four cutting edges or lips, and the lip angle may vary between 90°and 120°. 
   　　在图12.2中同样能看到 空心钻具有平坦的端部。斜面可以有三或四条切削刃或钻唇 并且钻唇角可以在90°到120°之间变化。 
   　　Core drills are employed for enlarging previously made holes and not for originating holes. This type of drill is characterized by greater productivity, high machining accuracy, and superior quality of the drilled surfaces. 
   　　空心钻用于扩大已有的孔而不是打孔。这类钻头具有较大生产率、高加工精度和优良钻削表面质量的特性。 
   　　 
   　　Gun drills. Gun drills are used for drilling deep holes. All gun drills are straight-fluted, and each has a single cutting edge. A hole in the body acts as a conduit to tran *** it coolant under considerable pressure to the tip of the drill. 
   　　深孔钻。深孔钻用于钻深孔。所有深孔钻都是直出屑槽的并且均为单切削刃。钻头体中有个孔作为导管在相当大的压力下将冷却液传送到钻头顶端。 
   　　There are two kinds of gun drills, namely, the center-cut gun drill used for drilling blind holes and the trepanning drill. The latter has a cylindrical groove at its center, thus generating a solid core, which guides the tool as it proceeds during the drilling operation. 
   　　深孔钻有两种型别?即用于钻盲孔的中心切削深孔钻和套孔钻。后者在其中心有一圆 柱形沟槽?这样能生成整体芯在钻孔作业过程中引导钻头。 

6. 英文 机械 短文 求5篇 英文机械类短文

Mechanical engineering is a discipline of engineering that applies the principles of physics and materials science for analysis,design,manufacturing,and maintenance of mechanical systems.It is the branch of engineering that involves the production and usage of heat and mechanical power for the design,production,and operation of machines and tools.[1] It is one of the oldest and broadest engineering disciplines.
  The engineering field requires a vast understanding of core concepts including mechanics,kinematics,thermodynamics,materials science,and structural analysis.Mechanical engineers use these core principles along with tools like computer-aided engineering and product lifecycle management to design and analyze manufacturing plants,industrial equipment and machinery,heating and cooling systems,motorized vehicles,aircraft,watercraft,robotics,medical devices and more.
  这一篇是对机械工程的简单介绍
  这样的文章真不好找呢

7. 英文 机械 短文

Special field speciality: Energy skilled AutoCAD applying , Pro/e carry out 2 D 3 D drawing building a model , the machine tool carries out machine work like skilled operation, skilled the softwares drawing such as transporting office office software , being able to handle coreldraw , photoshop. Training and job go through: 2008.7 months instruct and work in TE centre reality after graduating. Reality includes machinery basis exercise during the model; Mould disassembly , plotting; The benchwork training; The machine tool is handled; The computer-aid software is trained to wait for a project, the maximum has improved self machinery design relevance ability. The various clip being in progress time formal job administers the utensil and the part design , carry out 3-D building a model , draw two Wei Tu , the period and the colleague design the intelligence handcart together , are in charge of handcart overall structure design , make , solder, and perfect a job mainly. And ensure that the handcart accords with usage call for , draw relevance part picture, and mass-produce; Assist product line to reform the function producing a machine , improving. Experience and show in school practice: Greatly, at 3 o'clock the first Tractor Factory produce practice , process the vehicle part once in China, have had very big .know about to the flow of production. Once assumed a post of the yard student union cadre during the period of school , gained the "excellent student union cadre "title. Style of writing is fairly good , many times is rewarded in soliciting articles in school, the article announces once on province level newspaper. English it is said that the read-write ability is stronger , persists in forging white silk spoken language still always and now