美国中文文献书目控制自动化述评

According to the statistical data of 1991, there are over a hundred libraries in North America holding a total of more than ten million Chinese, Japanese and Korean materials, among which there are 50%-80% Chinese records. The initial study made by the United States of bibliographic control of Chinese material dates from the last decade. Among the departments that made the study, the RLIN (Research Library Information Network) and the OCLC (On-Line Computer Library Center) are the two systems of uttermost importance.The paper reviews the development and the progress of the automation of bibligraphic control for Chinese materials in the United States and the five focuses already discussed.9 illus.1 table.1 appendix.25 references.     

机床的最优负荷问题

机床加工中的最优负荷问题是提高经济效益的最重要途径之一,本文就此问题进行了探索,所得出的解法具有一定推广价值.     

扩展Markovnikov规则使用范围

Markovnikov规则对于研究不对称烯烃的亲电加成反应具有重要的指导作用,通过多个具体实例使人们对该规则使用范围的理解更全面更深刻.     

晶体场理论对配合物水解反应机理的研究

本文应用晶体场理论研究了配合物[COX(NH3)5]2+的水解反应机理.