flumpv.砰地倒下；砰地落下n.砰然声flun.流行性感冒Fluorescein labeling荧光素标记fluorobutyl acrylate氟代丙烯酸丁酯fluoroborate plating[化] 氟硼酸盐电镀fluoresence lifetime荧光寿命fluooxycolumbic acid[化] 氟氧铌酸fluctuation velocity脉动速度,波动速度fluo-solid roaster流化焙烧炉fluctuating velocity脉动速度, 波动速度fluctuation of speed转速波动fluoroscopic machine透视机