例句與造句

1. The simulations results show that the average combustion temperature is much lower in fuel - rich state and little higher in oxygen - rich state near the best o / f ratio . by extending the post - chamber length the oxidizing gas and the fuel pyrolytic gas can burn completely and the average combustion temperature can be prominently increased . the fuel - rich recirculation zone close to the head of combustion chamber is very important for the combustion
   計算結(jié)果分析表明：發(fā)動機在富燃狀態(tài)下平均燃燒溫度偏低，在接近理想配比的富氧狀態(tài)下平均燃燒溫度有所提高；加長補燃室可以大幅度提高發(fā)動機的平均燃燒溫度，并促進氧化劑氣體和熱解氣體的充分燃燒；燃燒室頭部的富燃回流區(qū)對發(fā)動機的燃燒非常重要，去掉燃燒室頭部突擴段后，氧化劑氣體和燃料熱解氣體不能充分燃燒，發(fā)動機的平均燃燒溫度大幅下降。
2. It's difficult to find recirculation zone in a sentence. 用recirculation zone造句挺難的