?频率容[许]差[度]    frequency tolerance

?清风,五级风    fresh breeze

?鲜鱼运输船    fresh fish carrier

?大风,八级风    fresh gale

?新鲜食品    fresh provision

?淡水    fresh water

?淡水冷却器    fresh water cooler

?淡水过滤器    fresh water filter

?淡水载重线    fresh water loadline (F)

?淡水泵    fresh water pump

?淡水舱,淡水柜    fresh water tank

?磨耗    fretting

?摩耗腐蚀,磨蚀    fretting corrosion

?摩擦,摩擦力    friction

?摩擦损失    friction (or fric- tional) loss

?摩阻煞    friction brake

?摩擦煞    friction brake

?磨阻离合器    friction clutch

?摩擦修正数    friction correction

?摩擦联结器    friction coupling

?摩阻联结器    friction coupling

?磨阻鼓    friction drum

?摩擦鼓    friction drum

?摩擦疲劳    friction fatigue

?摩擦水头,摩擦落差    friction head

?摩擦落差    friction head

?摩擦损失    friction loss

?磨擦锯床    friction saw

?摩擦锯床    friction saw

?摩擦迹流    friction wake

?摩擦焊    friction welding

?摩擦曳力    frictional drag

?摩擦曳力系数    frictional drag coefficient

?摩擦阻力    frictional resistance

?摩擦伴流    frictional wake

?磨擦轮    frictional wheel

?巡防舰,中型快速舰    frigate

?前柱    front column

?正视图    front elevation

?前面填角焊    front fillet weld

?前管集箱,前管头箱    front header

?正视图,前视图    front view