low NO低NOx燃烧
lowadj.低的;少的;低落的;低声的;卑劣的;低等的adv.低地;低声地;低下地;廉价地n.低水平;低价;低谷v.哞哞叫
low-cost houses经济适用住宅
low-bed trailer(英:low-loader)低货架挂车
low octane petrol低辛烷汽油
low earth-orbit低地球轨道
Low C/N ration低碳氮比
lowpass equalizer低通均衡器
low-lying hills低矮的丘陵
low-rate filter低速过滤池