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-voltage supply network低压供电网low-frequency oscillations低频振荡low horizontal ground stress低水平应力Low-rise dwelling building低层住宅Low Probability of Detection低探测概率Low-pressure casting brass低压铸造黄铜low concentration of ammonia低浓度氨氮Low mountains and hills area低山丘陵区low-temperature activation低温活化low-energy np-scattering低能np散射