program section
| prefix
| program section abbr. | |
| el. | 程序段 |
| prefix abbr. | |
| gen. | 字冠; 首标; 前束 |
| avia. | 地区号码; 电报报头 |
| earth.sc. | 词头 |
| math. | 前加号码 |
| radio.amat. | 前缀 |
| |||
| 程序段 | |||
|
program section : 7 phrases in 5 subjects |
| Business | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Geology | 1 |
| Technology | 2 |