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| preliminary vacuum | |||
| fore vacuum | |||
| backing vacuum | |||
| pre-vacuum | |||
| primary vacuum | |||
| forevacuum | |||
| near-vacuum | |||
| first-stage vacuum; forvacuum; initital vacuum; initial vacuum; rough exhaust; prevacuum (igisheva) | |||
| Russian thesaurus | |||
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| вакуум обычно 10-0,1 Па, создаваемый форвакуумным насосом. Большой Энциклопедический словарь | |||
| форвакуум: 4 phrases in 2 subjects |
| Refrigeration | 1 |
| Technology | 3 |