Tong-Nan-Ba structure is a large hydrocarbon trapping structure in the northeast of Sichuan basin.

川东北通、南、巴构造是四川盆地内一个大型油气构造，是“七五”期间国家重点科技攻关项目之一。

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Ba-sentences have two topics: the first topic is the topic of the whole sentence; the second topic is the topic of structure, which only functions as a topic.

“把”字句有两个主题，第一个是全句的主题，第二个是结构的主题，结构主题只具有主题性。

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This paper introduces the contents, structure, features, retrieval functions and service of the ba CD ROM database, and it? S technology developments.

本文介绍了BA生物学文献光盘数据库的内容、结构特点、主要检索功能以及服务和技术开发情况。

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Finally, having started with a clean sheet, Emirates has a flat management structure and the kind of flexible, highly productive workforce that carriers such as strike-torn BA and high-cost Lufthansa can only dream of.

ECONOMIST: Aviation in the Gulf: Rulers of the new silk road | The