经济管理类毕业论文文献综述

ded to exactlμ move the tool. Thix program (called ‘‘part program’’) ix written uxing a particular programming language that can be read bμ everμ NC machine (machinex have to be ximilar: turning

计量经济学论文 浅析广东地区居民消费和国民生产总值之间的关系摘要:居民消费在国民收入总量中占有相当大的比重,研究居民消费水平对于把握区域经济的宏观平衡和动态增长具有不可忽视的意义。 本文应 用计量经济方法对广东省近二十年来 居民消费行为进行了实证分析,结果表明,影响人们当期消费最主要的因素是收入,但同时消费也受国家政策等因素的影响,收入水平和增长速度直接影响消费需求的增长

, Japan, Germany, have the broad market with the numerical control technological transformations engine bed and the production line, has formed the engine bed and the production line numerical

6000r/min。 实际应用中主要有两类高速主轴： 一类是具有零传动的高速电主轴，这类主轴因采用电机和机床主轴一体化的结构， 并经过精确的动平衡校正，因此具有良好的回转精度和稳定性，但对输出的扭矩和功率有所限制； 另一类是以变频主轴电机与机械变速机构相结合的主轴 .这类主轴输出的扭矩和功率要大得多，但相对来说回转精度和平稳性要差一点，因此对于这类主轴来说

ble (Remanufacturing) industry. Renewable industry in the famous panies: Borsches engineering pany, atoms machine tool pany, DevliegBullavd (Bo) services group, US equipment panies. Companies in the

could operate only a few minutes without a tube failing. In addition, the puter weighed many tons and was very difficult to program. ENIAC was programmed through the use of thousands of switches. The