与大多数包装框架不同，Rails能通过查询数据库表发现对象模型的特征。
But unlike most wrapping frameworks, Rails can discover the features of the object model by querying the database table.
通过建立特征模型，引入成组技术，建立工艺数据库，系统的功能得以实现。
The function of this system fulfilled by establishing feature model, presenting group technology, founding process database.
模型与信号分析数据库连接后，可得到该特征频率处的故障参数信息。
When the model is connected with the analytic database of signal, the fault parameters corresponding with the characteristic frequency can be gained.
建立了多层信息抽象数据模型的高层视图和特征数据库模式，为特征提取提供技术依托。
The thorough view of data model for data mining and schemas of RS image feature database are established.
利用以上模型设计了一种视频数据库查询系统，用户可以根据不同的层次特征，对视频数据库进行有效地浏览和检索。
According to the model proposed, a video query system is designed, users can efficiently browse and search video database by different characteristics from different layers.
以数据库的开发为主要实现手段；以特征模型的分析和信用评分的计算为核心；真正体现了计算机技术在管理学科中的应用。
It reflects the application of computer science in management by means of building up the database, analysing the character-mode and calculating the credit-score.
根据系统特征模型的划分，精心设计专家系统的知识库、数据库、规则库和推理机。
Based on the division of characteristic models of the system, the knowledge base, the data base, the rule base and the inference mechanism of expert system are designed meticulously.
着陆段初期，将局部图像提取的特征点与绕飞段建立的特征点数据库进行匹配，结合小天体三维模型，确定探测器在小天体固连坐标系下的位置、姿态等信息；
At the beginning of landing, the position and attitude of spacecraft can be estimated by using feature matching with the 3D shape features database builded during the rotation phase.
着陆段初期，将局部图像提取的特征点与绕飞段建立的特征点数据库进行匹配，结合小天体三维模型，确定探测器在小天体固连坐标系下的位置、姿态等信息；
At the beginning of landing, the position and attitude of spacecraft can be estimated by using feature matching with the 3D shape features database builded during the rotation phase.
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