| 单词 | amplifier |
| 释义 | Word Frequency amplifier(ˈæmplɪˌfaɪə) noun 1. an electronic device used to increase the strength of the signal fed into it 2. such a device used for the amplification of audio frequency signals in a radio, etc 3. photography an additional lens for altering the focal length of a camera lens 4. a person or thing that amplifies |
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