 |
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| 二次发射电子; 次级原子 | |||
| 二次电子; ★ 次级电子 | |||
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secondary electron : 62 phrases in 16 subjects |
| Air defense | 1 |
| Aviation | 3 |
| Chemistry | 3 |
| Earth sciences | 2 |
| Electronics | 29 |
| General | 1 |
| Geophysics | 1 |
| Materials science | 1 |
| Metallurgy | 1 |
| Nuclear physics | 2 |
| Physics | 1 |
| Radio | 3 |
| Scientific | 1 |
| Space | 2 |
| Technology | 10 |
| Textile industry | 1 |