preliminary heating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。 - A lot of the heat from this combustion goes right out the exhaust system, but some of it soaks into the engine, heating it up.
很多熱量從燃燒室散發(fā)出來(lái)，直接進(jìn)入廢棄排氣系統，一部分熱量進(jìn)入了發(fā)動(dòng)機去預熱發(fā)動(dòng)機。
