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| 同位素原子量; 同位素重量〔原子量〕 | |||
| 同位素 | |||
| 同位素量; 同位素的原子量 | |||
| English thesaurus | |||
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| iw | |||
| isotopic weight: 1 phrase in 1 subject |
| Geology | 1 |
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