A fire requires fuel to burn, air to supply oxygen, and a heat source to bring the fuel up to ignition temperature.

一把火需要燃料来燃烧、空气来提供氧气还有使燃料到底燃烧温度的热量。

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By changing positions of fuel injection and air supply, velocity oscillation may either be excited or damped.

通过调整燃料喷注位置和空气的供给速度，可激发或抑制振荡。

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The purpose of the carburetor is to supply and meter the mixture of fuel vapor and air in relation to the speed and load of the engine.

化油器的目的是提供并计量与发动机转速和负荷相应的可燃混合气。

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On that occasion, oxygen was pumped into the vessel to supplement the crew's air supply but all it did was fuel the flames of a fire which had already started, raising the temperature on board to 1, 000 degrees Celsius.

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