grate burning rate

例句：

1. 1. The efficiency of the new engine is much higher than that of the old one.
   新发动机的效率远高于旧的。
2. 2.The scientist used a special technique to measure the burning rate of the fuel.
   科学家使用了一种特殊技术来测量燃料的燃烧速率。
3. 3.The rate of change in temperature is directly proportional to the burning rate of the fuel.
   温度变化率与燃料的燃烧速率成正比。