| 单词 | pneumatic trough |
| 释义 | pneumatic troughnoun Chemistry.a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement. Origin of pneumatic troughFirst recorded in 1820–30 Words nearby pneumatic troughpneumatic bone, pneumatic conveyor, pneumatic duct, pneumatic pile, pneumatics, pneumatic trough, pneumatic tyre, pneumatization, pneumato-, pneumatocardia, pneumatocele Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for pneumatic troughpneumatic trough nounchem a shallow dishlike vessel filled with a liquid, usually water, and used in collecting gases by displacement of liquid from a filled jar held with its open end under the surface of the liquid 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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