Howard Pattee, an early cybernetician, defined hierarchical structure as a spectrum of connectance.

早期控论专家霍华德·派蒂将层次结构定为一个连接性频谱。

Basin floors generated at different times will exhibit a hierarchical sequence of crustal structure and epeirogenic behaviour.

不同时期生成盆地底板，将显示地壳构造等级次序和造陆性质。

The control system is a kind of hierarchical control system,which is composed of teach box,main microcomputer and hypogenous microcomputers.

控系统采用模块化、分布式多级单片机控方式，分为示教盒、机、下位机三级。