The multi-level control structure is also established on the basis of hierarchical control structure.

并在大系统递阶控制结构的基础上，构建了模型体系的多级控制结构。

youdao

The multi-level control structure is also established on the basis of hierarchical control structure.

并在大系统递阶控制结构的基础上，构建了模型体系的多级控制结构。

youdao