【摘要】 《中国图书馆分类法》第四版已于 1999年 3月出版 ,投入使用。此版本的修订充分满足了图书馆排架要求所需的稳定性 ,优化了检索功能 ,从综合分类法结构体系上照顾了专业单位的需要 ,保持了各学科专业类目深度的基本一致 ,具有前瞻性和预见性。“O4物理学”类在此次修订上具有较突出的特点 ,即 :调整类目结构 ;增加类分资料用类目 ;增加类目沿革注释 ;修改、规范类目名称等四个方面更多还原

【Abstract】 The Chinese Library Classification (CLC),fourth edition was published in March 1999 and came into use.The new edition provided stability necessary for arranging shelves,optimized searching function,suitable for specializedfield.So it possesses far sightedness.In this paper,the revised characteristics of CLC(O4 physics)is expounded from four aspects such as adjusting the structure of class items;increasing the items of classifying material;enlarging the explanatory note to the class evolution and revising,standardizing the terms of class.更多还原