运用航空运输经济原理，探讨了飞机在寿命周期内经济性变化。

According to the principle of air transportation economics, a study is conducted on the economic variations of aircraft at each stage during its life cycle And on this basis.

youdao

运用互联网思维，全面整合海运、空运、专线快递、跨国小包、海外仓储、金融、代理采购等市场资源，让跨境电商综合服务更加便利、高效、省心。

We integrated sea, air transportation, express, packet service, overseas warehousing, finance service resources to make our service more competitive and convenient.

youdao

运用互联网思维，全面整合海运、空运、专线快递、跨国小包、海外仓储、金融、代理采购等市场资源，让跨境电商综合服务更加便利、高效、省心。

We integrated sea, air transportation, express, packet service, overseas warehousing, finance service resources to make our service more competitive and convenient.

youdao