flutyadj.似笛声的；柔软清澈的flun.流行性感冒fluorine tolerance抗氟fluctuation theory起伏理论fluorescein enzyme荧光素酶fluorocarbon fibre碳氟纤维fluorite structure萤石结构fluoronephelometer荧光比浊计, 荧光散射浊度计fluorocarbon fiber碳氟纤维,氟烃纤维fluctuating charge可变费用fluoroimmuna assay荧光免疫测定fluorescein sodium荧光素钠