vehicles emission

• 汽车尾气

vehicles emission的用法和样例：

例句

1. New regulations are aimed at reducing the vehicle emission.
   新规定的目的是要降低汽车尾气的排放。
2. By means of flow visualization the pictures of the plume of automobile emission have been analyzed.
   指出了停车库内汽车尾气的形成发展实质上是烟羽的一种形式。