来自专业的译者、企业、网页和免费的翻译库。
number
number
最后更新: 2018-02-13
使用频率: 3
质量:
assessment number
vat number
最后更新: 2013-09-02
使用频率: 1
质量:
参考:
", flight international, june 12, 2007.
with the current high price for jet fuel and the emphasis on engine/airframe efficiency to reduce emissions, there is renewed interest in the propfan concept for jetliners that might come into service beyond the boeing 787 and airbus a350xwb.