Metadata
Author: ParaCrawl Corpus
Data
English[en]
One was a top-secret secure radio guidance system, using frequency-hopping technology, for Allied naval forces chasing down U-boats in the North Atlantic.
Chinese[zh]
一项是使用跳频技术的绝密安全无线电导航系统,用于盟军海军在北大西洋追逐U艇。