| 单词 | preamplifier |
| 释义 | preamplifier[ pree-am-pluh-fahy-er ] / priˈæm pləˌfaɪ ər / nouna device in the amplifier circuit of a radio or phonograph that increases the strength of a weak signal for detection and further amplification. Origin of preamplifierFirst recorded in 1930–35; pre- + amplifier Words nearby preamplifierprealtar, prealternate molt, preamble, Preamble to the Constitution, preamp, preamplifier, preanesthetic, preantiseptic, preappoint, prearrange, prearranged Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for preamplifierpreamplifier / (priːˈæmplɪˌfaɪə) / nounan electronic amplifier used to improve the signal-to-noise ratio of an electronic device. It boosts a low-level signal to an intermediate level before it is transmitted to the main amplifierSometimes shortened to: preamp 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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