Total factor productivity is an important index for measuring economic benefits.
全要素生产率是衡量经济效益的一项重要指标。
Boiler efficiency is an important economic index of thermal power plant, and fly ash combustible content is the important factor that influences the boiler efficiency.
锅炉效率是发电厂的一个重要经济指标，而飞灰可燃物含量是影响锅炉效率的重要因素。
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