| 单词 | vacuum frame |
| 释义 | vacuum framenounprinting a machine from which the air is extracted in order to obtain close contact between the surfaces of two materials, e.g. the film and plate during platemaking Words nearby vacuum framevacuum drying, vacuum energy, vacuum flask, vacuum fluctuation, vacuum forming, vacuum frame, vacuum gauge, vacuumize, vacuum-pack, vacuum-packed, vacuum pan Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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