短語詞組短語emergency jettison selector 應(yīng)急投放選擇開關(guān)canopy emergency jettison handle 應(yīng)急拋蓋手柄emergency jettison select switch 應(yīng)急投放選擇電門external suspension emergency jettison button 外吊掛緊急投放按鈕 返回 emergency jettison