ແມ່ນອາຍແກັສຖ່ານຫີນມີເທນຫຼືອາຍແກັສທໍາມະຊາດ

Methane is a form of natural gas, which is composed mainly of alkanes, including methane, ethane, propane, and butane, with methane being the predominant component.

ໃນ​ທາງ​ກົງ​ກັນ​ຂ້າມ, coal gas is a gas fuel consisting of a mixture of combustible substances, with carbon monoxide being its primary constituent.