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Helium 3
| Zählrohr
| Helium-3 | |
| chem. | Helium-3; 3He |
| Zählrohr | |
| el. | radiation counter tube |
| geophys. | gamma-ray counter |
| meas.inst. | radiation counter |
| tech. | counter; counter tube; counting tube |
| vac.tub. | radiation-counter tube |
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| Helium-3; 3He | |||
| Helium 3: 6 phrases in 3 subjects |
| Earth sciences | 1 |
| Nuclear physics | 4 |
| Physical sciences | 1 |