numeric field
| descriptor
| numeric field | |
| multimed. | 数字域 |
| tech. | 数字栏 |
| descriptor | |
| avia. | 描述符号 |
| hydroel.st. | 主题词 |
| oil | 解说符; 描述符; 描述信息 |
| telecom. | 叙词 |
| work.fl. | 描述符; 叙词 |
| |||
| 数字域 | |||
| 数字栏 | |||
| |||
| 数字域 | |||
|
numeric field : 7 phrases in 3 subjects |
| Information technology | 1 |
| Space | 1 |
| Technology | 5 |