另一位军事专家孟祥青表示，划设防空识别区可以留出预警时间，以便提前对航空器的性质做出判断，采取应对措施以确保海、空防安全。
Another military expert , Meng Xiangqing , says the establishment of the zone can help set aside early warning time to ascertain an aircraft 's purpose and attributes and adopt measures to protect air defense security .
孟祥青