off-course track偏航航迹
off-course detail偏离航向
off-course alarm偏航信号;偏航警报器
off-course signal偏航讯号;偏航信号
off-course correction偏航修正
off-course indications偏离航向指示
miles off-course偏航距离
off-course indication航向偏离指示;偏航指示
off-course pilot偏离航线的飞行员