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| high-frequency Q meter | |||
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高频 Q 表 : 29 phrases in 10 subjects |
| Air defense | 2 |
| Aviation | 4 |
| Earth sciences | 1 |
| Electronics | 3 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Space | 3 |
| Surgery | 1 |
| Technology | 12 |
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