The engines of the compressor run on the wellhead natural gas, thereby part of the fuel expense can be saved and much financial profit can be gained.
机组中的天然气发动机完全以井口天然气为燃料运行，可节省大量燃料费用，具有较高的经济效益。
Fuel is his single biggest expense: buying it takes up much of his time.
燃料的开销是最大的：购买也需要大量时间。
P. S. : the tickets reservation points can be only used for the expense of the ticket itself, but not include the fees for security, aerodrome construction, and fuel.
注：机票预定积分仅限于累计机票费用，保险费、机场建设费、燃油费不予以累计。
While a modified Otto cycle engine using the "Atkinson cycle" provides good fuel economy, it is at the expense of a lower power-per-displacement as compared to a traditional four-stroke engine.
虽然修改奥托循环发动机使用“阿特金森循环”提供良好的燃油经济性，这是比较传统的四冲程发动机在一个较低的功耗，每位移费用。
The integrated statistics calculate totals for distance, fuel and expense and average, maximum and minimum for consumption, distance per tank and fuel price.
综合的统计计算距离，燃料的总数和花费和平均，每个油箱消耗，距离的极大和极小和燃料价格。
The company spend more on fuel than any other expense, representing more than 30 per cent of its total operational spending.
加航在燃油上的开销远高于其它，约占公司运营总开支的30%以上。
The company spend more on fuel than any other expense, representing more than 30 per cent of its total operational spending.
加航在燃油上的开销远高于其它，约占公司运营总开支的30%以上。
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