database maintenance
| function
| database maintenance abbr. | |
| libr. | 数据库维护 |
| function abbr. | |
| gen. | 运行; 工作 |
| hydroel.st. | 作用 |
| interntl.trade. | 效用; 职能 |
| light. | 功能，用途 |
| math. | 运算 |
| met. | 功用; 用途 |
| |||
| 数据库维护 | |||
|
database maintenance : 5 phrases in 3 subjects |
| Aviation | 3 |
| Electronics | 1 |
| Information technology | 1 |