中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 30491.1-2014
Natural gas—Calculation of thermodynamic properties—Part 1: Gas phase properties for transmission and distribution applications 天然气 热力学性质计算 第1部分:输配气中的气相性质
Issued Date:2014-02-19
Implemented Date:2014-06-01
Issued by:
The Standardization Administration of the People's Republic of China