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| восстановление (аз пайвастагиҳои химиявӣ ҷудо кардани оксиген ё ба он пайвастагиҳо ҳамроҳ кардани гидроген) | |||
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истиқрор : 9 phrases in 2 subjects |
| Chemistry | 4 |
| General | 5 |
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