按功能来分，泵站既可指集油泵站也可指干线泵站，在某些情况下统指集油泵站和干线泵站。

Functionally, pump station are either gathering stations or trunk line stations, and in some cases both.

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三层结构体系是在分布式技术的基础上，把信息系统按功能划分为表示、功能及数据三部分。

In the three-layer architecture model information system is divided into: expression layer, business logic layer, DBMS layer.

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我厂生产的铆钉按功能来分，包括半空心铆钉、实心铆钉、非标准铆钉及螺钉等；

In terms of function, our rivets include semi-tubular rivets, solid rivets, non-standard rivets and screws and so on;

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