lowingn.牛鸣
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 altitude bombing sight低空投弹瞄准器
low-weir type classifier低堰式水力分级机
low pressure steam heating低压蒸汽供暖
low-grade antimony metal低品位金属锑
low percentages of protein蛋白质含量较低
low- field intensity MRI低场磁共振成像
low-dose hormone therapy低剂量激素治疗