着陆导航系统引导指示改成2个圆圈，它们必须重合才满足下滑道和方向定位的要求。
ILS guidance indication is changed to 2 circles that must be inside each other to be on the glide slope and localizer.
着陆导航系统引导指示改成2个圆圈，它们必须重合才满足下滑道和方向定位的要求。
ILS guidance indication is changed to 2 circles that must be inside each other to be on the glide slope and localizer.
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