lowbelln.小铃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 phytic acid mutant gene低植酸突变基因low vapor pressure chemical低蒸气化学品low-- power consumption低功耗low-resistivity oil layer低阻油层low-pressure steam engine低压蒸汽机low-frequency transformer低频变压器lowest water level forecast最低水位预测low-resolution television低清晰度电视low contrast complete match弱反差完全匹配low earth-orbit satellite低地球轨道卫星