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| radio-frequency | |||
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| high-frequency | |||
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hoogfrequent : 70 phrases in 13 subjects |
| Agriculture | 1 |
| Automated equipment | 1 |
| Chemistry | 4 |
| Communications | 3 |
| Earth sciences | 4 |
| Electronics | 25 |
| General | 9 |
| Industry | 10 |
| Information technology | 3 |
| Life sciences | 2 |
| Metallurgy | 5 |
| Physical sciences | 2 |
| Transport | 1 |