BG5EDM
:李老师,您好!请教此卡片中的:
It's was equipped with a 5 kw motor alternator supplying rotary spark transmission to a four wire T aerial resonant at 600 metres 250 feet above sea level.中的 to a four wire T aerial resonant at 600 metres ,这个600 米是什么??真的晕了!请赐教,谢谢!