短語詞組短語term parking apron 長期停機坪Crossing parking apron 穿越停機坪aircraft parking apron 停機坪parking apron planning 候機環(huán)境radiation from aircraft parking apron 機坪輻射helicopters and parking apron equipment 直升飛機及停機坪設(shè)備mass -parking apron detail 機群停機坪long -term parking apron 長期停機坪 返回 parking apron