The utility model can provide seven more precision indication of airfield approach gradient range for pilots on the basis of only three colors of red, yellow, green and three light fixtures.
本实用新型仅用红、黄、绿三 种颜色，三台灯具就能为进近中的飞行员提供七种更加精密的进近坡度范围指示。
The utility model can provide seven more precision indication of airfield approach gradient range for pilots on the basis of only three colors of red, yellow, green and three light fixtures.
本实用新型仅用红、黄、绿三 种颜色，三台灯具就能为进近中的飞行员提供七种更加精密的进近坡度范围指示。
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