1. 辅助放大器：boosted volume 增压体积 | booster amplifier 辅助放大器 | booster cavity 增压腔;传爆管腔
2. 升压放大器：booster alternator 升压交流发电机 | booster amplifier 升压放大器 | booster brake 助力制动器
3. 助力增幅器：增压器;升压器;增幅器;助力器;爆管 booster | 助力增幅器 booster amplifier | 升压电池[组] booster battery
4. 助力增幅器(电)：梯级放大器(电) cascade amplifier | 助力增幅器(电) booster amplifier | 间歇振荡器(电) blocking oscillator
noun
1. an amplifier for restoring the strength of a transmitted signal
Synonym: booster booster station relay link relay station relay transmitter