burning quality index

例句：

1. 1. The burning quality index of the coal is an important factor in determining its energy content.
   煤炭的燃烧质量指标是决定其能量含量的重要因素。
2. 2. The company's new product has a high burning quality index, which is expected to increase sales.
   该公司的新产品具有很高的燃烧质量指标，预计将增加销量。
3. 3. The burning quality index of the fuel was measured by using a special device.
   燃料的燃烧质量指标是通过使用一种特殊的设备测量得出的。