提供定期航班服务的承运人，或提供不定期航班但营运19个或以上座位的飞机的承运人，必须指定一名以上投诉处理人。
As a carrier providing scheduled service or a carrier providing nonscheduled service using aircraft with 19 or more passenger seats, you must designate one or more CROs.
如果您出具的客票是不定期的，您可根据我们的运价规则和航班座位可利用情况定座。
When a Ticket is originally issued without a reservation being specified, space may be later reserved subject to our Tariff and the availability of space on the flight requested.
到中国去的平信要靠船运。而船的航班是不定期的。
Ordinary mail to China goes by boat and the sailings are irregular.
不定期票可以很好地利用航班资源，提高航空公司收益。
Aperiodic ticket can make use of flight's seats which bring out revenue for airline.
本文主要论述了不定期票在各航班的优化控制方法，此方法建立在民航业经典的舱位控制理论之上，可以很好地与现有收益管理系统相结合。
In this article an optimal method is set up. The method is built on classic seat inventory control theory, so it can combined with revenue management system presently.
第三条本规定所称不定期飞行，是指不属于定期航班的民用航空运输飞行。
Article 3. For the purpose of these Regulations, "irregular flight" means flight in civil air transportation which does not belong to any regular air service.
第三条本规定所称不定期飞行，是指不属于定期航班的民用航空运输飞行。
Article 3. For the purpose of these Regulations, "irregular flight" means flight in civil air transportation which does not belong to any regular air service.
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