（转子机）缸体?    stator

风扇导流叶片?    stator vane

稳定调速率?    steady state speed governing rate

稳定工况?    steady working condition

金属垫片式消声器?    steel pack muffler

气门杆导管?    stem guide

气门重叠度?    stem overlap

阶梯顶活塞?    step-head piston

刚性缓冲弹簧?    stiff buffer spring

斯特林发动机?    stirling engine

理论配比?    stoichiometric

高效带    stoichiometric

仓栅式汽车?    storage/stake truck

钻孔立柱车    storage/stake truck

分层充气?    stratified charge

温度补偿    stratified charge

囚车    street sprinkler (street flusher)

洒水车?    street sprinkler (street flusher)

冲程?    stroke

行程缸径比?    stroke-bore ratio

改变行程的曲轴?    stroked crankshaft

普通级轿车?    subcompact car

亚临界排气?    subcritical exhaust

副燃烧室?    subsidiary combustion chamber

载体?    substrate

整体式载体    substrate

吸油管?    suction pipe

真空吸粪车    suction -type sewer scavenger

吸污车?    suction -type sewer scavenger

自装卸垃圾车    suction -type tumbrel tanker

真空吸粪车?    suction -type tumbrel tanker

突变负荷试验?    sudden load change test

机油盘放油塞?    sump plug

增压比?    supercharge ratio

增压式发动机?    supercharged engine

增压器?    supercharger

增压器阻风阀?    supercharger blast gate

增压器调节容气量的旁通阀?    supercharger control bypass

增压器叶轮?    supercharger impeller

增压装置?    supercharging device

增压度?    supercharging level

超临界排气?    supercritical exhaust