spark rate

例句：

1. 1. The engine's performance depends on its spark rate.
   发动机的性能取决于其火花率。
2. 2. The scientist used a new method to measure the spark rate in the experiment.
   科学家使用一种新的方法来测量实验中的火花率。
3. 3. The spark rate is crucial for the success of the project.
   火花率对于项目的成败至关重要。