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| быстродействующий затвор (quick opening closures are pressure retaining structures designed to provide access to pipelines and pressure vessels.) (синоним – байонетный затвор SergeyLetyagin) | |||
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| быстродействующий затвор (quick opening closures are pressure retaining structures designed to provide access to pipelines and pressure vessels.) (синоним – байонетный затвор SergeyLetyagin) | |||