- soft vacuum
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низкий вакуум
Англо-русский словарь терминов металлургии и сварки. 2011.
soft vacuum
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Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… … Wikipedia
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soft rays — soft rays, radiation of low penetrating power, such as is obtained from tubes of low vacuum … Useful english dictionary
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