大型支线喷气客机发动机的发展的英文

development of large regional jet engines

• 大型:    large-scale; large ...
• 支线:    branch line; feede ...
• 喷气客机:    jet liner
• 发动机:    engine; motor
• 的:    4次方是 The fourth po ...
• 发展:    develop; expand; g ...