 |
| |||
| service direct; service entre points fixes | |||
| service point-à-point; service point à point | |||
|
point-to-point service : 5 短语, 1 学科 |
| 通讯 | 5 |
|
| |||
| service direct; service entre points fixes | |||
| service point-à-point; service point à point | |||
|
point-to-point service : 5 短语, 1 学科 |
| 通讯 | 5 |