 |
| |||
| содержание серы (напр., в топливе) | |||
| сернистость | |||
| сернистость углей | |||
| серосодержание | |||
| содержание серы | |||
| Schwefelgehalt: 5 phrases in 2 subjects |
| Chemistry | 3 |
| Oil / petroleum | 2 |
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