Compared with no heater,the THC emissions decreased 42.7%,the CO emissions decreased 2.1%,the NOx emissions decreased 72.3%.是什么意思_Compared with no heater,the THC emissions decreased 42.7%,the CO emissions decreased 2.1%,the NOx emissions decreased 72.3%.在线翻译_英语_读音_用法_例句