论文部分内容阅读
3月11日,中国航空工业集团公司科技委主任、全国人大代表张洪飚透露,中航工业正在积极准备自主研制20吨级以上的民用重型直升机,初步
On March 11, Zhang Hong Biao, director of the CST of China Aviation Industry Corporation and NPC deputy, revealed that AVIC is actively preparing for the independent research and development of civilian heavy-duty helicopters of over 20-ton class, initially