短語詞組短語unmanned d spacecraft 無人飛船an unmanned spacecraft 一個(gè)無人駕駛航天器;無人飛船;無人的飛船Unmanned spacecraft operational procedures 無人駕駛的飛行器操作程序unmanned spacecraft detail 無人航天器;無人宇宙飛船Unmanned spacecraft operability 不載人航天器的可操作性 返回 unmanned spacecraft