The RR300 for the helicopter market is the newest engine in the helicopter powerplant range and the first to provide turbine power in the lower shaft horsepower range.是什么意思_The RR300 for the helicopter market is the newest engine in the helicopter powerplant range and the first to provide turbine power in the lower shaft horsepower range.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句