fluytn.北欧小商船flun.流行性感冒Fluoioblycofen - ethyl乙羧氟草醚Fluorous biphase systems氟两相体系fluoroacetyl-urokinase氟乙酰尿激酶fluoro-protein foamite氟蛋白泡沫灭火液fluorine-liquid oxygen液氟液氧混合剂fluorinated polyurethane含氟聚氨酯fluorocarbon resin fibre碳氟树脂纤维fluctuations in exchange[经] 汇率变动, 汇兑涨落Fluconazole-resistance氟康唑耐药Fluoroethylene carbonate氟代碳酸乙烯酯

1. How does swine flu spread among pigs?
   猪流感病毒如何在猪之间传播？
2. Influenza virus subtypies were detected correctly.
   广谱地鉴定出流感病毒的相关亚型。