Its subject coverage includes: noise reduction, abatement, and cancellation in aircraft engines;and jet, turbojet, turbofan, and gas turbine engines.是什么意思_Its subject coverage includes: noise reduction, abatement, and cancellation in aircraft engines;and jet, turbojet, turbofan, and gas turbine engines.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句