low in缺乏； 含 ... 量低的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 light intensity低光度,低照度low grade scheelite低品位白钨矿low-volume nozzle低流量喷嘴low-energy liquid低能液体Low-cost strategy低成本战略low pressure tunnel引水管道low-limit anomaly异常下限low calorific value低热值Low-yield orchard低产园low-light-level低照度