续-如何科学飞伞-翱翔飞行的原理和技巧(6) - ... ... 目视飞行规则(VFR Visual Flight Rules) 重要气象情报(SIGMETs,Significant Meteorological Advisories) 飞行员重要气象情报(AIRMETS) ...
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...(cloud coverage)目视飞行规则 (VFR Visual Flight Rules)重要气象情报(SIGMETs,Significant Meteorological Advisories)飞行员重要气象情报(AIRMETS)气象监测和警报(Weather Watches & Warnin..
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