英语翻译The various computerized functions under CAD/CAM fall in

英语翻译
The various computerized functions under CAD/CAM fall into three general areas:
1.Design/drafting,or computer-aided engineering.
2.Planning/scheduling,or management information systems.
3.Fabrication,or manufacturing automation.
A conceptualized or idealized CAD/CAM system is shown in Fig.This shows how the
user interacts with the computer via a graphics terminal,designing and controlling the manu-
facturing process from start to finish with information stored in a shared data base.With the
advent of interactive graphics,the problem of the user entering data and instructions into the
computer with stacks of coded punched cards or reels of taps went away.No longer was
the user required to be experienced in computer programming and operation to use the ma-
chine.With interactive graphics,the user communicates with the computer in display-screen
pictures.No knowledge of computers is required to operate these systems,and the communi-
cation is in real time,which means that the computer's response to the user's instructions is
almost instantaneous.In CAD/CAM,the requirement is for the solution of three-dimension-
al mechanical design and manufacturing problems.Interacting with the computer via key-
board and lightpen or other pencil like devices,the designer specifics points and lines on the
display screen to quickly construct a display-screen drawing or model.This is in reality the
representation of the diagram stored in the computer data base.

各种各样的CAD/CAM(计算机辅助设计/计算机辅助制造)计算机功能分为三类:
1.设计/制图,即计算机辅助工程.
2.计划/进度,即信息管理系统.
3.制造,即制造自动化
图例显示了一个概念化或理想化的CAD/CAM系统.它表明了用户和计算机如何通过图象终端,由始至终设计和控制制造过程.所有的信息都储存在一个共享的数据库里.随着互动图象的出现,使用一摞摞编码的机读卡或者诸多磁带盘所带来的拥护输入数据和指令的问题不复存在.用户不再需要熟悉计算机编程和操作来使用机器.
有了互动图象,用户通过屏幕显示图像与计算机交流.不再需要懂得计算机来操作系统.而且对话是实时的,也就意味着计算机对用户指令的反应几乎是即时的.CAD/CAM的要求是对三维机械设计和制造问题的解答.
通过键盘和光笔或者其它类似于笔的仪器与计算机交流,设计者在显示屏幕上确定点和线,在显示屏幕迅速建构制图和模型.事实上这就是存储在计算机数据库里的图表的表现.
问到我的专业了,不过这段原话说的并不是十分贴切.