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| 中高频 | |||
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| 中高频1500〜6000千周 | |||
| 中-高频 | |||
| 中高频 | |||
| 中—高频 | |||
| 中一高频 | |||
| English thesaurus | |||
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| MHF | |||
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medium -high frequency : 24 phrases in 9 subjects |
| Air defense | 3 |
| Aviation | 4 |
| Construction | 1 |
| Earth sciences | 1 |
| Electronics | 4 |
| General | 3 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 5 |
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