low Re低雷诺数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 melting point glass低熔点玻璃Low temperature working低温作业Low-set rectal cancer低位直肠癌low-battery condition低电压状态Low Carbon Molten Steel低碳钢液low-resistivity layer低阻油层low carbon ductile iron低碳球墨铸铁low density wind tunnel低密度风洞lowfrequency ultrasound低频超声low voltage fast record低振幅快波记录