零件本体的语义特征描述主要以JLBM-1为基础，同时结合其它传统的零件描述方法创建得到的。

The semantic characteristic description of parts ontology is on the basis of JLBM-1, and integrates some other traditional parts description methods.

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但这里存在一个问题：搜索型号和年份必须使用assembly表，但是零件号和零件描述只能在Inventory表中找到。

Here, though, there's a problem: a search for model and year must use the Assembly table, but the part number and part description can only be found in the Inventory table.

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以某阶梯轴为例，表明利用基于本体的零件描述模型对零件信息进行表达，可以更加合理有效地描述领域本体知识库中的零件信息。

Taking a stepped shaft as example, the paper shows the part information expressed with the part description model based on ontology can describe the part rationally and effectively.

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