PACC专业代码是英国科学文摘（INSPEC）中的用于物理类分类的代码，而PACS代码是《Physics and Astronomy Classification Scheme》的缩略,是由美国物理学会提供的物理天文学专业分类代码.鉴于目前国内外物理类刊物中较普遍使用PACS代码

。(PACS代码分类较细，一个PACC可能对应多个PACS代码-PACC professional code is the UK Science Abstracts (INSPEC) in the code for the physical classification, and PACS code is " Physics and Astronomy Classification Scheme"　of the abbreviated is provided by the American Physical Society Physical Astronomy Classification professional code. Given the current physics journals at home and abroad over the widespread use of PACS code. (PACS classification codes smaller, a PACC code may correspond to multiple PACS