名词 amplifier:

1. electronic equipment that increases strength of signals passing through it

amplifiern.放大器；扩音机amplifier rack放大器架amplifier plug放大器插头amplifier test放大器试验amplifier band放大屁频带amplifier array放大器阵列amplifier panel放大器盘amplifier chain放大器链,放大器通路amplifier block放大器功能块amplifier power功率放大器amplifier noise放大齐声,放大器噪声

1. I'll demonstrate how to use the power amplifiers?
   我来示范一下如何使用这个功率的放大器。
2. These amplifiers have long been made with tiny election tubes.
   这些放大器是用微型电子管制成的。