A.Mannini,Vapor cycle versus air cycle environmental control system selection criteria on modern helicopters,20th European rotorcraft forum,1994.是什么意思_A.Mannini,Vapor cycle versus air cycle environmental control system selection criteria on modern helicopters,20th European rotorcraft forum,1994.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句