| |||
hierarchy | |||
hierarchy configuration | |||
hierarchic structure | |||
hierarchical structure |
分级 结 构 : 40 phrases in 10 subjects |
Animal husbandry | 1 |
Aviation | 2 |
Cartography | 1 |
Desert science | 1 |
Electronics | 10 |
Hydroelectric power stations | 1 |
Project management | 1 |
Space | 6 |
Technology | 15 |
Telecommunications | 2 |