英语翻译1.Numerical control provides the operational control or

英语翻译
1.Numerical control provides the operational control or machines by a series of computer coded instructions comprising numbers,letters,and other symbols,which are translated into pulses of electrical current or other output signals that activate motors or other devices to run the machine.With NC,machines run consistently,accurately,predictably,and essentially automatically.Quality and productivity are increased,and rework and lead-times are reduced compared with manual operation.
2.Manufacturing technology has been around for many years.Over these years,it has gone through many changes,ranging from the simple to the complex.The driving forces behind the changes were people's desires to improve basic needs such as food,clothing,shelter,and recreation.To meet these desires,methods have been developed from producing simple devices such as weapons for obtaining food to today's modern manufacturing systems,which use computers to produce such items as televisions,mobile phones and space vehicles.
3.To keep the parts separated,it is necessary that the pressure within the lubricating film balance the load on the sliding surfaces.If the lubricating film's pressure is supplied by an external source,the system is said to be lubricated hydrostatically.If the pressure between the surfaces is generated as a result of the shape and motion of the surfaces themselves,however,the system is hydro-dynamically lubricated.This second type of lubrication depends upon the viscous properties of the lubricant.
4.Automation may be defined as a system that is relatively self-operating.Such a system includes complex mechanical and electronic devices and computer-based system that take the place of observation,effort,and decision by a human operator.It is a system that exhibits properties of human beings by following predetermined operations or responding to encoded instructions.
5.A spring is a load-sensitive,energy-storing device the chief characteristics of which are an ability to tolerate large deflections without failure and to recover its initial size and shape when loads are removed.Although most springs are mechanical and derive their effectiveness from the flexibility inherent in metallic elements,hydraulic springs and air springs are also obtainable.

1.数控编码指令提供了包括数字,字母的一系列计算机和其他符号,然后把这些脉冲转化为运行控制或机器的电流或其他输出信号,启动电机或其他装置运行的机器.数控,机器运行持续,准确,可以预料,而且基本上自动.质量和生产效率增加,返工和前置比人手操作缩短了时间.
2.制造技术已经存在了许多年.这些年来,它经历了许多变化,从简单到复杂不等.修改驱动力是我们的愿望,以改善诸如食物,衣服,住房的基本需要,和娱乐.为了满足这些愿望,方法已发展到生产诸如武器,今天的现代制造系统使用计算机来生产电视机,手机和航天器的简单设备等项目.
3.为了让它们分开,有必要润滑膜内部平衡负荷的压力滑动.如果润滑膜的压力是由外部来源提供,该系统被认为是润滑静水压力.如果两者之间的表面是形状和表面自己的动议而产生的压力,但是,该系统水文 动态润滑.这种润滑第二类型取决于润滑油的粘性属性.
4.自动化可以被定义为一个系统,相对自我经营.这样一个系统,包括复杂的机械和电子设备和计算机为基础的系统,采取观察,工作的地方,人工操作和决策.这是一个系统,展示人类的属性按照预先确定的行动或应对编码的指示.
5.源泉是一个负载敏感,能量储存装置,其中的主要特征是不能够承受大程度,并收回其初始大小和形状时,负载小时.虽然大多数弹簧是机械和来自灵活的金属元素固有的效力,液压弹簧和空气弹簧同时可