Poisson function

例句：

1. 1.In probability theory, the Poisson distribution is used to model events that occur with a certain rate.
   在概率理论中，泊松分布用于模拟事件发生的速率。
2. 2. The Poisson process is a mathematical model that describes the random movement of particles.
   泊松过程是一种数学模型，描述了粒子随机移动的过程。
3. 3.The Poisson function has many applications in engineering and science, such as in traffic flow modeling and earthquake prediction.
   泊松函数在工程和科学中有广泛的应用，如交通流建模和地震预测。