A.
主要成分Main components。无色,稍有蒜味。Colorless, slightly garlicky
B.
比空气轻,在标准压力(101.325kPa)和15℃下,1Nm3甲烷重0.6785kg。Lighter than air, 1Nm3 methane weighs 0.6785kg at standard pressure (101.325kPa) and 15℃
C.
具有高的热稳定性和很高的热值(33904~37668kJ/m3)。It has high thermal stability and high calorific value (33904 ~ 37668kJ/m3).