low age低龄化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 energy charged particle低能带电粒子low power transceive module微功率收发模块low mountain hilly district低山丘陵区low-frequency attenuation低频衰减Lowenstein's climbing pupillow temperature passivation低温钝化,低温钝化法low temperature brittleness低温脆性low-carbon bainitic steel低碳贝氏体钢low pressure reducing valve低压减压器low-frequency electricity低频电流