record format
| descriptor
| record format abbr. | |
| dat.proc. | 记录格式 |
| descriptor abbr. | |
| 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 |
| |||
| 记录格式 | |||
|
record format : 15 phrases in 6 subjects |
| Earth sciences | 1 |
| Electronics | 3 |
| Information technology | 7 |
| Project management | 1 |
| Space | 1 |
| Technology | 2 |