Compared with the traditional model, the spatiotemporal extended object model is able to speed up the data modeling process and to make model easier to comprehend and maintain.
时空扩展对象模型与传统方法相比，能更方便地获取时空信息，加速建模过程，使建立的模型更容易理解和维护。
Constraints provide a flexible, compact and uniform way to represent diverse data capturing spatiotemporal behavior, continuous change, incomplete information and complex modeling requirements.
约束提供一种灵活、统一、简洁的方式来表达时空对象的特性，描述对象连续的变化，表示不完整的信息和满足复杂建模的要求。
Constraints provide a flexible, compact and uniform way to represent diverse data capturing spatiotemporal behavior, continuous change, incomplete information and complex modeling requirements.
约束提供一种灵活、统一、简洁的方式来表达时空对象的特性，描述对象连续的变化，表示不完整的信息和满足复杂建模的要求。
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