frequency keying
| method
| frequency keying | |
| tech. | 频率键控 |
| method | |
| gen. | 法; 标准; 水平 |
| environ. | 方法 |
| hydroel.st. од. | 方法 |
| mech. | 电火花法 |
| |||
| 频率键控 | |||
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frequency keying : 118 phrases in 14 subjects |
| Air defense | 6 |
| Automobiles | 1 |
| Aviation | 7 |
| Communications | 1 |
| Electronics | 49 |
| Geophysics | 1 |
| Information technology | 11 |
| Multimedia | 1 |
| Oil / petroleum | 1 |
| Radio | 1 |
| Space | 18 |
| Technology | 9 |
| Telecommunications | 11 |
| Wind Energy | 1 |