超低水平液闪谱仪
ultra low level liquid scintillation spectrometer
单项低水平抗-HBs阳性
Isolated low levels anti-HBs
低氮低热量
Hypocaloric and low nitrogen
低低水位
LLWL (low-low water level
低-低水位开关
low-low water level switch
低碱低C3A低水化热水泥
low-alkali low-C3A and low-heat cement
低水低排
low water level and low-speed drainage
低水平放射性废水
low-level radioactive wastewater
low level radioactive wastewater