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| 同位素组成【核】 | |||
| 同位素组成成分 | |||
| 同位素成分; 同位素组成 | |||
| 同位素组分 | |||
| isotopic composition: 22 phrases in 5 subjects |
| Ecology | 2 |
| Geology | 1 |
| Oil / petroleum | 2 |
| Sports | 1 |
| Technology | 16 |
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