空气参数 meaning in English

air parameter
air particle

Within a period of one year , conducts a questionnaire survey in more than six hundred students of a university in changsha , and measures some related air parameters on the spot
摘要对长沙某高校的600多名学生进行了为期一年的现场问卷调查，对有关空气参数进行了测量。
Dl29a ac unit is the supporting air conditioner on vehicles of beijing metro batong line used to adjust air parameters inside the car and create a comfortable inner environment
Dl29a型空调机组是为北京八通线地铁车辆配套的空调设备，用以调节车内的空气参数，创造舒适的车内环境。