英语作文：科技

[科技作文英文的]First,John von Neumann proposed that the program reside in the computer's memory where it could be changed at will.W.Presper Eckert,Jr.,of the University of Pen...+阅读

关于科技的英语作文： Science and technology have changed our life thoroughly throughout the history, especially in the last century. There is a prevailing understanding about science and technology among the general public that they are the same thing of two different names but they are acutally two things. Science is kind of series of theorrtical concepts and people can accept it or not, and it will not affect commom people's life to a large extent, but it's a different way when it comes to technology because technology has more pratical effect on people. People have to endure the results of the pactical applicance of technology whether they are good or not, such as the air pollution, and it all happens without people's acceptance, for it all depends on the local governments' or even the nations' decision. 关于科技的英语作文： The development of science and technology makes our life more comfortable and convenient. However, scientists have created many problems, which are not easy to be resolved, such as air pollution, the deterioration of environment and the scarcity of natural resources, to which we must some solutions. Modern science and technology render people many advantages. Modern telecommunication shortens the distance between people and makes communication much easier. Internet is widely used now not only for collection of abundant information but also for correspondence. Email, the most effective communication device now, is becoming very popular. Besides, telephone and mobile phone make contact more convenient than before. Modern transportation, such as airplanes and high-speed trains make our journey smooth and fast. With the help of modern transportation, people can go everywhere they prefer to. The journey to outer space and other planets is not a dream any more. Rockets and space shuttles can help us realize the dream of space travel. Modern medicine prolongs peoples life and relieves patients of sufferings from many diseases. Cancer and AIDS are fatal to peoples health. Thanks to the endeavors scientists have made, these diseases become treatable. However, the process of scientific development also arouses many sever problems to our human beings. Internet, though widely used in modern communication, is easy to be destroyed by computer virus. Outer space exploration has produced much waste in the space. A tiny metal, a screw, for example can destroy a flying man-made satellite. Industrialization is making natural resources become scarce. Confronted with these problems, scientists are seeking prompt and feasible solutions. The development of science and technology bring about both positive and negative effects to us. We must eliminate the positive effects to the least extent.

找一篇关于information security的文章要英文的

Information security technology is the Information Management and Information Systems Undergraduate courses a student. With the rapid development of computer technology, computer information security problems are becoming increasingly of concern. Students to master the necessary information security management and security technology is essential. Through the course of the study, students can master the computer the basic principles of information security and information security in today's popular settings, security vulnerabilities, firewall, strategy and realization of the principle and to guard against hackers in order to enable students to achieve competence in information systems, operations, management and maintenance and other related work. Information security technology Broadband Network has been going deep into the lives of social activities have a profound impact, network security has become more and more important result. The urgent need for all sectors to engage in the work of information security of computer systems, senior technical personnel. Master of the professional training of the installation of network equipment, management and maintenance, analysis and information systems enterprise network security vulnerabilities, network security issues resolved in a timely manner and in accordance with the operational characteristics of enterprises and institutions secure e-commerce design / Professional Administrative site . Engaged in information security product sales and promotion, information systems and e-commerce / Chief security design, network and information system security test and so on. Major professional courses: the basis of computer network technology, TCP / IP protocol, information security technology infrastructure, based on cryptography, information security products and application technology, assembly language programming, SQL database security design, ASP.NET Programming (Web security), computer system security, Web programming technology.

求一篇有关计算机专业的英文文章2000词左右即可

The computer is a wonderful machine. They are already widely used in industries and in universities. They are used in many ways. Computers can do many kinds of work. For example, computers can helps us do maths problems quickly. Some problems are too hard for us to work them out, but computers can. A scientist can ask computers some questions, and the computers can answer on the screen.

求一篇有关数控加工的英文论文一起中文翻译2000字左右急！

数控加工的特点数控加工，也称之为NC(N帅ericalConb01)加工，是以数值与符号构成的信息，控制机床实现自动运转。数控加工经历了半个世纪的发展已成为应用于当代各个制造领域的先进制造技术。数控加工的最大特征有二点：一是可以极大地提高精度，包括加工质量精度及加工时间误差精度；二是加工质量的重复性，可以稳定加工质量，保持加工零件质量的一致。也就是说加工零件的质量及加工时间是由数控程序决定而不是由机床操作人员决定的。数控加工具有如下优点： 1）提高生产效率；（2）不需要熟练的机床操作人员；（3）提高加工精度并且保持加工质量（4）可以减少工装卡具：（5）容易进行加工过程管理；（6）可以减少检查工作量；（7）可以降低废、次品率；（8）便于设计加工变更，加工设定柔性强（9）容易实现操作过程的自动化，一人可以操作多台机床；（10）操作容易，极大减轻体力劳动强度。

随着制造设备的数控化率不断提高，数控加工技术在我国得到日益广泛的使用，在模具行业，掌握数控技术与否及加工过程中数控化率的高低已成为企业是否具有竞争力的象征。数控加工技术应用的关键在于计算机辅助设计和制造（CAD/CAM）系统的质量。 CAD/CAM已成为促进国民经济发展的关键技术，是实现制造技术现代化的必由之路。如何进行数控加工程序的编制是影响数控加工效率及质量的关键，传统的手工编程方法复杂、烦琐，易于出错，难于检查，难以充分发挥数控机床的功能。在模具加工中，经常遇到形状复杂的零件，其形状用自由曲面来描述，采用手工编程方法基本上无法编制数控加工程序。近年来，由于计算机技术的迅速发展，计算机的图形处理功能有了很大增强，基于 CAD/CAM技术进行图形交互的自动编程方法日趋成熟，