chemical combustion

例句：

1. 1.The chemical combustion of the gases produced by the reaction was monitored closely.
   对反应产生的气体的化学燃烧过程进行了密切监测。
2. 2. The process of chemical combustion is complex and requires careful control.
   化学反应的过程复杂且需要谨慎控制。
3. 3.During the chemical combustion, the flames can be seen rising from the bottom of the container.
   在化学反应过程中，可以看到火焰从容器底部升起。