文章研究了工业技术文献的分类标准、分类体系和分类方法三个问题。
They are classification standards, classification system and classification methods of documents on industry and technology.
该标准规定了工业射线照相胶片系统(由胶片和胶片处理组合而成)的分类方法和胶片处理的控制方法。
The standard is applicable to the classification of the film systems (combination of film and film processing) for industrial radiography and the control of film processing.
文章研究了工业技术文献的分类标准、分类体系和分类方法三个问题。
This article is about the classification of documents on industry and technology.
文章研究了工业技术文献的分类标准、分类体系和分类方法三个问题。
This article is about the classification of documents on industry and technology.
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