逻辑数据库设计需期的数据，描述了如何数据能够身体储存及存取对存储设备的电脑系统。
Logical database design takes a view of the data that describes how data are to be physically stored and accessed on the storage devices of a computer system.
他们使用特殊的设施和决策支持设备(电脑系统)来保障安全和高效的飞行。
They monitor the flights using special equipment and decision support tools (computers) that ensure a safe and efficient flight.
连接电脑系统内部份的设备或连接两个不同系统的装置。它可以从简单的电线到复杂的翻译规约的智能装置。
The link between parts of a computer system, or between two different systems, It varies from a simple cable connection to an "intelligent" device which translates protocol.
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