preheated air的用法和樣例：
例句
- The heated-air system provides rapid heating of the air entering the carburetor when the engine is cold.
發(fā)動(dòng)機處于冷態(tài)時(shí)，預熱空氣裝置能迅速提供熱的空氣進(jìn)入化油器。 - Flame properties of propane in varying air temperature and varying oxygen content air are observed.
觀(guān)察了丙烷在不同預熱空氣溫度及不同含氧濃度氣氛中的火焰特征。
