service code
| book
| service code | |
| el. | 勤务 码 |
| telecom. | 业务码; 公电密语 |
| book | |
| gen. | 预订; 预约 |
| environ. | 书 |
| fin. | 注册; 记帐 |
| met. | 手册; 说明书; 记录簿 |
| sport. | 书 |
| |||
| 勤务代码 | |||
| 业务码; ★ 业务代码; 公电密语 | |||
|
service code : 17 phrases in 8 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Computer networks | 1 |
| Electronics | 5 |
| Information technology | 2 |
| Space | 1 |
| Technology | 2 |
| Telecommunications | 4 |