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1·In the paper, the research on the quality of rolled stepped shaft for overcoming geometrical limitation and standard design of 3-roll cross wedge rolling mill is reported.

对三辊楔横轧轧件质量、克服几何限制条件措施及轧机定型设计等进行了研究。

2·Because of the smaller ratio of slenderness, the theory of Timoshenko beam is more suitable than Bernoulli-Euler beam's for analysis of the dynamic behavior of stepped shaft.

由于这类轴具有较小的长径比，因此，在分析它的振动时，采用铁木辛柯梁理论比欧拉梁理论更为合适。

3·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.

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。

4·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.

介绍了一种基于机械工程图的零件信息描述的方法单元型面描述法，并给出了一个应用实例。

5·It is easy that the main resonance of a stepped drive shaft is analyzed with the equivalent shaft.

利用当量轴可方便地分析阶梯传动轴的主共振。