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在机器的设计和制造过程中以及在科学研究的领域内,我们常常部分引用资本主义国家的技术资料、图纸和文献等。由于采用的标准不同,就常常牵涉到英制和公制尺寸的变换问题。在国际贸易、技术交流、书刊编译、以及各国标准的分析研究等工作中,也常希望将英制标准中的数据变换为大家所熟悉和通用的公制标准数据,或者将我们的公制尺寸变为某些国家所常用的英制尺寸(在出口业务或技术交流中)。同一份设计图纸,如何能通过适当的换算方
In the design and manufacture of machines and in the field of scientific research, we often quote in part the technical data, drawings and documents of capitalist countries. Due to the different standards used, it often involves the conversion of imperial and metric dimensions. In the fields of international trade, technology exchange, compilation of books and books, as well as the analysis and study of national standards, it is often hoped that the data in the English standard will be transformed into the standard data that is familiar and common to all of us, or will change our metric size to some Commonly used in some countries inch size (in the export business or technical exchanges). The same design drawings, how to pass the appropriate conversion side