层次顺序 meaning in English

hierarchical sequence
hs hierarchical sequential

Word objects are arranged in a hierarchical order , and the two main classes at the top of the hierarchy are the
Word对象是按层次顺序排列的，层次结构顶端的两个主类是
The software of the controller is designed by sequence of the ground motor control , communication protocol and the top application control
控制器软件按照底层电机控制、中间层通讯协议和上层应用控制的层次顺序进行设计。