particulate reinforced composite

例句：

1. 1. The particles in the air are causing health problems.
   空气中的颗粒正引发健康问题。
2. 2.The researchers found that particulate matter was a significant contributor to air pollution.
   研究人员发现，颗粒物是空气污染的一个主要因素。
3. 3. The city is investing heavily in particulate filtering systems for its public transportation.
   该市正在大力投资于公共交通系统的颗粒过滤系统。