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| proton n | |||
| proton n | |||
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proton : 38 phrases in 11 subjects |
| Antennas and waveguides | 1 |
| Earth sciences | 13 |
| Electronics | 2 |
| Energy industry | 1 |
| Environment | 2 |
| Information technology | 2 |
| Life sciences | 3 |
| Measuring instruments | 4 |
| Natural sciences | 2 |
| Physical sciences | 6 |
| Technology | 2 |