lowsag低弧垂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-frequency signal低频信号low-dispersion fiber弱色散光纤low-head development低水头开发lowest navigable stage最低通航水位low-voltage customer低压用户low-level wind shear低空风切变lowamplitude reservoir低幅度油气藏low-pressure sprayer低压喷雾器low permeability alloy低导磁率合金low permeability pools低渗透油气藏