Object relational mapping refers to the technique of mapping the data representation from an object model to a relational data model with a SQL-based schema.

用基于 SQL 的模式可以把数据呈现从对象模型映射到关系数据模型，对象关系映射引用了这项技术。

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And the overall design model of system based on this investigation put forward, including function architecture, and does research the key technique of the distributed NMS.

在此基础上提出了该系统的总体设计，包括功能体系结构，并对分布式网管系统的关键技术进行了研究。

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Based on the actual construction practice, the mechanism model and construction technique of ejector anchor retaining and protecting for soft foundation pit.

通过施工实例，对软土基抗围护中喷锚网支护的机理模型及施工技术进行探讨，并介绍实际技术处理措施及效果。

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