保证真空

【化】 guaranteed vacuum

保证的英语翻译：

guarantee; assure; certify; warrant; ensure; pledge; secure; assurance
guaranty; surety; warranty
【经】 assurance; endorsement; guarantee; guaranty; recognizance; scure
secure; security; surely

真空的英语翻译：

vacuum; void
【化】 vacuum
【医】 vacuum