進近著陸系統(tǒng) instrument landing approach system: 儀表著陸進場系統(tǒng)instrument landing system approach: 盲降landing approach system: 進場著陸系統(tǒng)bals blind approach landing system: 儀表進場著陸系統(tǒng)approach and landing: 進場與著陸下載手機詞典可隨時隨地查詞查翻譯