frequency coding
| system
| frequency coding abbr. | |
| mil., air.def. | 频率编码 |
| system abbr. | |
| gen. | 体 |
| IMF. | 安排 |
| interntl.trade. | 系统分析 |
| math. | SPOOLING 系统 |
| met. | 装置 |
| met. од. | 系 |
| tech. | 制度; 方法 |
| tech. од. | 体系; 系统 |
| |||
| 频率编码 | |||
| 频率密码 | |||
|
frequency coding : 15 phrases in 8 subjects |
| Air defense | 3 |
| Communications | 2 |
| Electronics | 2 |
| Information technology | 1 |
| Rail transport | 1 |
| Sports | 1 |
| Technology | 3 |
| Telecommunications | 2 |