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| α电离真空规; α粒子电离压强〔压力,强度〕计; 测量电离程度用的 α管; α射线管 | |||
| α管; α粒子电离压力计 | |||
| alphatron: 6 phrases in 4 subjects |
| General | 1 |
| Metallurgy | 1 |
| Physics | 2 |
| Technology | 2 |
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