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| levynkäyttöjärjestelmä | |||
| English thesaurus | |||
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| DOS | |||
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| disk operating system (ssn); disk-oriented operating system (дисковая операционная система ssn) | |||
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Disc : 30 phrases in 10 subjects |
| Agriculture | 1 |
| Chemistry | 2 |
| Earth sciences | 4 |
| Industry | 8 |
| Information technology | 2 |
| Mechanic engineering | 4 |
| Medical | 1 |
| Natural sciences | 3 |
| Physical sciences | 2 |
| Transport | 3 |