1、Almost all modern superheterodyne receivers use frequency synthesis and direct digital synthesizers.
几乎所有现代的超外差接收机都使用频率合成和直接数字合成器。
2、Superheterodyne receivers are widely used in many applications, such as radio communication, radar systems, and electronic warfare.
超外差接收机广泛应用于无线通信、雷达系统和电子战等许多领域。