preamplifier system

• 前置放大器

preamplifier system的用法和样例：

例句

1. According to series-wound amplifiers and noise theory, an applied circuit of low-noise preamplifier is designed using unattached components.
   摘要根据级联网络及噪声理论，本文采用分立元件设计了一种低噪声前置放大器实用电路。