英语看题表达，英语高手进2

所谓机床数控化改造即是在现有机床上增加微型计算机控制装置，使其具有一定的自动化能力，以实现预定的加工工艺目标和所要达到的零部件加工精度。它是现代机电技术的发展与生产实际需要相结合的产物，并随着机床行业以及技术的不断进步而发展起来的。主要内容是通过应用成熟的数控技术和经验，结合生产实际需求对现有机床的局部结构进行改造，加装国内国外先进的数控系统，对达不到要求的机床部件进行更换，直到达到所需的加工精度和加工形状要求的过程。尽管其技术性能指标无法达到现有先进数控机床的水平，但也完全可以胜任实际的加工要求了。
翻译：The so-called engine bed numerical control transformation is increases the microcomputer control device on the existing engine bed, enable it to have certain automated ability, realizes the spare part processing precision which the predetermined processing craft goal and must achieve.It is the product which the modern mechanical and electrical technology development and the production actual need unify, and develops along with the engine bed profession as well as the technical unceasing progress.The primary coverage is through the application mature numerical control technology and the experience, in coor with progress of production actual demand carries on the transformation to the existing engine bed partial structure, the