?低转速(港内)    slow speed

?减速能(核能)    slowing down power

?泥,污物,淤渣    sludge

?运泥船    sludge boat

?污物运输船    sludge boat

?出渣孔    sludge hole

?污物柜    sludge tank

?填料焊接    slugging

?水门    sluice door

?闸阀    sluice valve

?泥浆    slurry

?马力余裕    SM (= sea margin)

?短牵条(锅炉)    small (or screw) stay

?左舷艏锚    small bower

?微量降伏    small scale yielding

?细管锅炉    small tube boiler

?金属被覆电弧焊    SMAW (= shield metal arc welding)

?中国机械工程学会    SMEC (= The Society of Mechanical Engineering of China)

?史密斯修正波效应    Smith correction

?史密斯修正值    Smith correction

?铁工    smith work

?烟箱    smoke box

?烟箱门    smoke box door

?鉴烟表    smoke chart

?烟色图    smoke chart

?探烟器    smoke detector

?防烟头盔    smoke helmet

?烟浓度计    smoke indicator

?防烟面具    smoke mask

?排气浓度计    smoke meter

?测烟装置    smoke observation device

?烟管火警系统    smoke pipe fire alarm system

?烟幕    smoke screen

?烟囱    smoke stack

?烟管    smoke tube

?烟管锅炉    smoke tube boiler

?烟管式火警装置    smoke tube type fire alarm system

?吸烟室    smoking room

?平滑面    smooth surface

?平水区域    smooth water area

?平水区域航行船    smooth water service vessel

?潜弧焊接    smothered arc welding