Energy is added to the air by direct combustion of gas in the air.

热能通过气体在空气中的直接燃烧而加入到空气中去。

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The CCS is best described as an advanced hybrid of coal gasification and direct combustion.

洁净燃烧系统即一种煤炭气化和直接燃烧高级混合技术。

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The lowest value use of refinery gas is direct combustion, specifically to cogenerate steam and power.

炼厂气价值最低的应用是直接燃烧，尤其是燃烧炼厂气用来生产蒸汽和发电。

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Mr. ERON SHOSTECK (Alliance of Automobile Manufacturers): Carbon dioxide is a direct byproduct of a vehicle's fuel combustion.

NPR: States Push Automakers on Fuel Efficiency

Cars like the Buick Encore, Fiat 500 and Lincoln MKZ, meanwhile, improve mileage through direct fuel injection, which injects gas directly into the combustion chamber in extremely precise amounts.

FORBES: 10 Ways Automakers Are Helping You Spend Less On Gasoline

Now, it's true that amazing gains are being made in the efficiency of internal combustion engines, both gas and diesel: direct injection, cylinder deactivation, stop-start, eco-mode throttle mapping, to name a few of the recent applied technologies.

WSJ: Ford C-Max Hybrid Energi: The Bawdy Electric