?成熟波,全发浪    fully-developed (or fully-arisen) sea (or waves) (FDS)

?熏舱消毒    fumigation

?功能设计    function design

?机能负荷    functional load

?基[本]频[率]    fundamental frequency

?烟囱,戽斗    funnel

?自然送风    funnel (or natural) draught

?烟囱[贯穿处]裙板    funnel apron

?烟囱面积    funnel area

?烟囱底座装甲    funnel base armour

?烟囱裙板    funnel bonnet (or cape)

?烟囱外壳    funnel casing

?烟囱盖    funnel cover

?自然通风    funnel draft

?烟囱紧急关断装置    funnel emergency shut-off device

?烟囱牵索    funnel guy (or shroud, or stay)

?烟囱盖    funnel hood

?烟囱罩    funnel hood

?烟囱标记    funnel mark

?烟囱牵索    funnel shroud

?烟囱牵索    funnel stay

?烟囱罩    funnel umbrella

?炉,炉膛    furnace

?炉热硬杆    furnace brazing

?炉膛变形指示器    furnace deformation indicator

?炉门    furnace door

?炉前金属件    furnace front

?炉口,炉口金属件    furnace mouth

?转炉滚子    furnace roller

?炉喉    furnace throat

?炉膛管    furnace tube

?炉内容积    furnace volume

?水垢    furring

?熔丝,保险丝,熔断器    fuse

?保险丝座    fuse base

?保险丝盘    fuse board

?保险丝盒    fuse box

?保险丝箱    fuse case

?保险丝组件    fuse element

?易熔合金火警探测系统    fuse metal fire detecting system

?熔丝开关    fuse switch

?易熔金属    fusible alloy (or metal)