combustion value

例句：

1. 1. The energy produced by the combustion of fossil fuels is essential for industrial processes.
   化石燃料燃烧产生的能源对于工业过程至关重要。
2. 2.The efficiency of a combustion engine depends on its ignition and combustion characteristics.
   燃烧发动机的效率取决于其点火和燃烧特性。
3. 3.The combustion value of coal is an important factor in determining its market price.
   煤炭的燃烧值是决定其市场价格的重要因素。