air quality level

• 空气质量水平

air quality level的用法和样例：

例句

1. Customer service is directly proportional to the rate of productivity as well as to the quality level.
   客户服务是成正比的生产率以及质量水平。
2. The goal for a collage or a university is to show that its programs meet accepted levels of quality.
   一个学院或者学校的目标就是要使它的计划满足可接受的质量水平的要求。