目前，民航系统共有5所民用飞行学以及两所科研中心和11个科研基地，在校学员27,000名。
About 27, 000 students were enrolled among five civilian flight schools, two scientific-research centers and 11 scientific-research bases.
为了解民航客机垃圾的卫生学特点，探讨其无害化处理方法，就首都机场的有关问题进行了调查与研究。
To study the sanitary characteristics of airline aircraft garbage and the way of its treatment, an investigation was made in the Capital National Airport.
为了解民航客机垃圾的卫生学特点，探讨其无害化处理方法，就首都机场的有关问题进行了调查与研究。
To study the sanitary characteristics of airline aircraft garbage and the way of its treatment, an investigation was made in the Capital National Airport.
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