发射机
Various PA linearization techniques have been adopted to improve linearity and power efficiency of wireless transmitters. 于是多种不同功率放大器的线性化技术被采用来改善无线发射机的线性度及效率。
Radio transmitters are allowed for reasons of safety and for communication between the team leader and his pilots. 无线电发射机之允许，是基于安全的理由，及领队和他的飞行员之间的沟通。
神经递质
