燃气的单元加热器 gas fired unit heater
燃气的检验 Testing of fuel gases
可燃气体的爆炸限 explosive limit of flammable gas
气体燃料的热值 gaseous fuel calorific value
气体的燃烧 burning of gas
可燃混合气的爆轰范围 detonation limit for mixture gases
燃气轮机驱动的 gas turbine powered ; gas turbine driven
燃烧气的湿式净化 wet purification of combusting gas
如果电能来自使用煤或燃气的发电厂，碳排放依然是存在的。
If the electricity is from a coal - or gas-fired power plant, then there are still carbon emissions from that vehicle's use.
他们也敢在恶劣的环境下冒险寻找石油和天燃气的非传统资源，因为环境没这么恶劣的时候，提炼这些资源成本非常高。
They also venture into harsher climes and seek out unconventional sources of oil and gas that, in happier times, would be too costly to extract.
燃气和燃油的消耗量在天冷时总会增加。
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