American Heritage defines a utility as a commodity component that is provided for general consumption and designed for a variety of practical USES.

美国传统词典定义公用事业是作为日用组件为大众消费和设计提供不同的实际使用。

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The scene database is important component of flight simulators, and building the scene database universal platform has remarkable function and practical significance.

地景数据库是飞行模拟器的重要组成部分，构建地景数据库通用平台具有显著的作用和现实意义。

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According to this design and the above main theory method, we design a group to be possible the practical application legal system domain software component.

根据这一设计和上述主要理论方法，我们设计出一组可以实际应用的法制领域的软件构件。

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"Some programs have a huge leadership component, others spend more time in practical case studies, " says Michael Desiderio, executive director of the Executive MBA Council in Orange, Calif.

WSJ: An Executive M.B.A. With a Global Flavor