经济性是飞机市场竞争力的体现,如果一款飞机没有经济性,那么将会使航空公司买不起、乘客坐不起,这个型号的飞机也将会退出市场。通过分析影响EWIS的成本因素,总结出了EWIS成本控制的方向和内容。 Economy is the embodiment of the competitiveness of the aircraft market. If an aircraft is not economical, it will make the airlines unable to afford and the passengers will not be able to sit. The aircraft of this model will also be withdrawn from the market. By analyzing the cost factors affecting EWIS, the direction and content of EWIS cost control are summarized.