hierarchical data
| structure
| hierarchical data abbr. | |
| desert. | 分级数据 |
| structure abbr. | |
| gymn. | 编排; 成套动作 |
| hydroel.st. | 结构物; 建筑物 |
| hydroel.st. од. | 结构; 构造; 装置 |
| met. | 机构 |
| met. од. | 组织 |
| |||
| 分级数据 | |||
| 层次［分级］数据 | |||
|
hierarchical data : 17 phrases in 7 subjects |
| Artificial intelligence | 1 |
| Desert science | 2 |
| Electronics | 3 |
| Information technology | 3 |
| Space | 4 |
| Technology | 2 |
| Telecommunications | 2 |