The data objects are generally thin wrappers around the business data in tables with typical data access and relationship navigation methods.

这些数据对象通常为表格中的业务数据的瘦包装，提供数据访问和关系导航方法。

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The EMF provides a generic navigation model for the graph or related (or unrelated) objects, and contains a built-in change notification mechanism.

EMF 提供了用于图表或相关（或不相关）对象的通用导航模型，并且包含了一个内置的变更通知机制。

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Pose estimation is a key issue in mobile robots and important to moving objects tracking, robot navigation, map building, etc.

位姿估计是移动机器人研究中的一个关键问题，对于运动目标跟踪、机器人导航、地图生成等具有重要意义。

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