- open-and-shut controls
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English-Bulgarian polytechnical dictionary . 2013.
open-and-shut controls
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open — I. adjective (opener; openest) Etymology: Middle English, from Old English; akin to Old High German offan open, Old English ūp up Date: before 12th century 1. having no enclosing or confining barrier ; accessible on all or nearly all sides … New Collegiate Dictionary
shut — [ʆʌt] verb shut PTandPP shutting PRESPART [intransitive, transitive] 1. also shut down COMMERCE if a company, factory etc shuts or is shut, it stops operating permanently; =close down … Financial and business terms
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