logical channel
| group number
| logical channel | |
| telecom. | 逻辑通道 |
| group number | |
| auto. | 识别编码 |
| chem. | 基数 |
| ocean. | 潮群数 |
| oil | 组号 |
| |||
| 逻辑通道; ★ 逻辑信道 | |||
|
logical channel : 19 phrases in 4 subjects |
| Electronics | 10 |
| Information technology | 6 |
| Space | 1 |
| Telecommunications | 2 |