数据库中存放SNMS的被管理对象的实例构成的管理信息树(MIT)，同时也要存储反映被管理对象状态变化的事件。
The database stores managed Information Tree (MIT) which is a set of instances of managed objects, and it is also used to store events reflecting changes in status for these managed objects.
装配模型的结构体现了自项向下的设计理念，实现了装配树层次信息、配合信息和零件信息的分别管理。
The model embodied the top-down design idea, achieved the respective management of assembly architecture information, mate information and parts information.
研究了知识管理子系统的信息模型和树型结构的递归算法。
The recursive algorithmfor the information model and tree typed structure in the knowledge management subsystem has been studied.
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