The test on the(influence) of changing fuel supply advance angle on fuel economy was carried out on single cylinder diesel engine separately using diesel fuel and ethanol-diesel blend fuel.

在单缸柴油机上分别使用纯柴油和乙醇柴油混合燃料，进行了改变供油提前角对发动机燃料经济性影响的试验。

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To keep pace with the changing needs of the global UAS market, Schiebel now offers an external fuel tank for extended range and endurance.

为了保持与全球UAS不断变化的市场需求步伐，Schiebel现在提供了一个外部燃料箱以扩展范围和耐力。

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When a fuel unites with oxygen, we say the fuel burns; what is really happening is that chemical energy (fuel and oxygen) is changing to heat energy.

当燃料与氧气结合，我们就说燃料开始燃烧了，实际发生的是化学能(燃料与氧气)转化成热能。

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Not changing fuel and air filters.

FORBES: 10 Ways You May Be Killing Your Car

Market conditions are rapidly changing the cost of fuel.

FORBES: High Gas Prices? Retailers To The Rescue

The recession and high fuel prices are demonstrably changing behaviour more than concerns about the environment.

BBC: Slump cuts our fuel use more than green concerns