am.pli.fi.ern.(名词)One that amplifies, enlarges, or extends.放大者,扩大者:放大、扩大或扩展的事物Electronics A device, especially one using transistors or electron tubes, that produces amplification of an electrical signal.【电子学】 放大器:尤指利用晶体管或电子管使电子信号放大的仪器