?锻造,锻件    forging

?锻锤    forging hammer

?锻机    forging machine

?锻造比    forging ratio

?锻工场    forging shop

?锻击试验    forging test

?锻造发热剂    forging thermit

?锻工钳    forging tongs

?舱口侧半梁    fork beam

?船形计算吃水    form (or geometrical) draught

?船形计算吃水    form draft

?船形阻力    form drag

?船形效应    form effect

?形状因子    form factor

?船形计算干舷    form freeboard

?船形阻力    form resistance

?型成机    forming machine

?呎货柜[相]当[数]量    forty feet equivalent unit (FEU)

?前曲叶片    forward curved vane

?艏吃水    forward draft

?艏吃水    forward draught

?艏垂标    forward perpendicular

?上艏舱    forward quarter

?前进焊接    forward welding

?浊气    foul air

浊气    foul air

?纠缠锚    foul anchor

?积垢    fouling

?基础,基座    foundation

?地脚螺栓,基座螺栓    foundation bolt

?底脚螺栓,基座螺栓    foundation bolt

?基板    foundation plate

?铸工场,铸造    foundry

?铸工场    foundry shop

?铸工    foundryman

?四冲程循环    four cycle (or stroke)

?四冲程引擎    four cycle (or stroke) engine

?四衡程引擎    four cycle (or stroke) engine

?四轮滑车    four fold block

?四桅船    four mast barque (or four-masted bark)

?四冲程油机    four stroke oil engine

?四轮滑车    fourfold block