频率    frequency?

频繁灌溉    frequent irrigation?

新鲜风化层    fresh regolith?

淡水湖沉积物    fresh water lake deposits?

淡湖    fresh water lake?

淡水沼泽    fresh water marsh?

淡水浮游生物    fresh water plankton?

淡水植物    fresh water plant?

淡水沼泽    fresh water swamp?

淡水    fresh water?

新暴露面    freshly exposed surface?

松散性    friability?

松散铁磐    friable iron pan?

松散土壤    friable soil?

擦碎角砾岩    friction breccia?

摩擦水头损失    friction head loss?

摩擦层    friction layer?

摩擦水头    friction losses?

摩擦    friction?

大气边缘层    fringe region?

长廊林    fringe woodland?

裙礁    fringing reef?

前缘异常    front anomaly?

前缘元素    front elements?

融雪前锋线    front line of snowmelt?

正视图    front view?

锋    front?

锋面分析    frontal analysis?

锋面雾    frontal fog?

前碛    frontal moraine?

锋面降水    frontal precipitation?

锋面    frontal surface?

锋面雷暴    frontal thunderstorm?

锋面波    frontal waves?

锋带    frontal zone?

国境    frontier?

锋生    frontogenesis?

锋消    frontolysis?

冻裂    frost cracking?

霜裂    frost cracks?

霜冻损害    frost damages?

解冻期    frost free period?