飞球式调速器?    flyball governor

提前器飞锤?    flyweight

飞轮?    flywheel

飞轮壳?    flywheel cover

飞轮标记?    flywheel mark

飞轮的惯量矩?    flywheel moment of inertia

飞轮齿圈?    flywheel ring gear

飞轮芯轴?    flywheel spindle

消防指挥车    foam vehicle

泡沫灭火车?    foam vehicle

强制排气?    forced exhaust

压力润滑法?    forced lubrication

强制风冷?    forced-air cooling

强制循环式化冷系统?    forced-feed water circulation system

叉形连杆?    fork-and-blade connecting rod

叉式装货机?    fork-type loading (unlaod) machine

刮板式装货机    fork-type loading (unlaod)machine

短头轿车?    forward control passenger car

四腔化油器?    four-barrel carburetor

四冲程循环?    four-stroke cycle

四冲程发动机?    four-stroke engine

栏板内高    frame free length

车架自由长度?    frame free length

自由加速法?    free acceleraton method

自由排气?    free exhaust

自由环?    free ring

防冻塞?    freeze plug

前驱动汽车?    front drive automobile

发动机后置式客车    front drive automobile

前排气管?    front exhaust pipe

半挂车前回转半径?    front fitting radius of semi trailer

车轮垂直行程    front fitting radius of semi trailer

前悬?    front overhang

后悬    front overhang

正碰撞?    frontal collision (frontal impact)

侧碰撞    frontal collision (frontal impact)

前置式发动机?    front-engine

燃空比?    fuel air ratio

油气分离器?    fuel and vapor separator

燃油消耗量?    fuel consumption

反馈控制    fuel control system

燃油控制系统?    fuel control system