principles of operation短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 工篆理 Firstly, a brief overview of the principles of operation and the main design considerations for several different multiplexer subsystem configurations was introduced. 本文主要介绍并联式可调多工器匹配网络、多头线多工滤波器的优化设计。 fabiao