The core of the system is the HF automatic link establishment, for short, ALE.

而这一系统的核心就是短波自动链路建立系统，简称ALE系统。

youdao

The core of the system is the HF automatic link establishment, for short, ALE.

而这一系统的核心就是短波自动链路建立系统，简称ALE系统。

youdao