China 'GB/T 25753.2-2010
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 25753.2-2010
Vacuum technology - Roots vacuum pump - Measurement of performance characteristics - Part 2: Measurement of compression ratio of the zero throughput 真空技术 罗茨真空泵性能测量方法 第2部分:零流量压缩比的测量
Issued Date:2010-12-23
Implemented Date:2011-10-01
Issued by:
The Standardization Administration of the People's Republic of China