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| tritium | |||
| tritium The hydrogen isotope having mass number 3; it is one form of heavy hydrogen, the other being deuterium | |||
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tritio : 26 phrases in 10 subjects |
| Automated equipment | 1 |
| Chemistry | 2 |
| Earth sciences | 8 |
| Electronics | 4 |
| Environment | 2 |
| General | 3 |
| Medical | 1 |
| Natural sciences | 2 |
| Nuclear and fusion power | 2 |
| Research and development | 1 |