多级模型 meaning in English

multistage model

A comparison between the partial credit model and several other multiple category models
分部评分模型与其它几种多级模型的比较
The application of multi - modelled fuzzy comprehensive appraisement to p . e quality education assessment
综合评判多级模型在体育教学质量评价中的应用
Node merge strategy and formation of single node binary tree were discussed in particular
提出了时钟二叉树的多级模型，并设计了基于多级遗传算法的时钟二叉树形成算法。