user layer
| protocol
| user layer | |
| el. | 用户层 |
| protocol | |
| environ. | 协议 |
| math. | 草案; 规约; 礼宾; 草约; 备忘录 |
| sport. | 议定书; 比赛成绩册 |
| stat. | 协议 |
| textile | 规程 |
| |||
| 用户层 | |||
|
user layer : 5 phrases in 3 subjects |
| Computer networks | 2 |
| Electronics | 2 |
| Telecommunications | 1 |