DIN EN ISO 6976 E:2015 文件草案 天然氣 根據成分計算熱值、密度、相對密度和沃泊指數(ISO/DIS 6976:2015)
Draft Document - Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO/DIS 6976:2015); German and English version prEN ISO 6976:2015