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| chemical composition (of a star, d'une étoile) | |||
| chemical composition; chemical constitution; composition | |||
| chemical composition The nature and proportions of the elements comprising a chemical compound | |||
| analytical composition | |||
| composition chimique: 10 phrases in 6 subjects |
| Chemistry | 3 |
| Earth sciences | 1 |
| General | 1 |
| Life sciences | 1 |
| Medical | 1 |
| Metallurgy | 3 |