- a device for exercising and developing the muscles of the body
- an electronic device for increasing the variations in signal amplitude in a transmission system according to a specified law
| 单词 | expander |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 ex•pand•er (ik span′dər),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: expander /ɪkˈspændə/ n
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