?季节区域    seasonal zone

?风干木材    seasoned timber

?风干,季化,干燥    seasoning

?底座,座位    seat

?座    seating

?座环    seating ring

?适航性    seaworthiness

?适航证书    seaworthy certificate

?正割模数    secant modulus

?左舷[大]锚    second (or port) bower

?第二[层]甲板    second deck

?二管轮    second engineer

?二副    second mate (or officer)

?二等报务员    second operator

?二等舱旅客    second saloon (or class) passenger

?二等舱乘客    second saloon passenger

?蓄电池    secondary battery

?二次接着    secondary bond

?蓄电池    secondary cell

?二次冷却空气    secondary cooling air

?次配电    secondary distribution

?二次流    secondary flow

?次级损失    secondary loss

?次构件    secondary member

?二次小齿轮    secondary pinion

?次电源    secondary source

?次应力    secondary stress

?剖面,截面,型材    section

?[横]剖面积曲线    section area curve

?分节锅炉    section boiler

?分电箱    section box

?组合管集箱,组合管头箱    section header

?剖面模数    section modulus

?型钢    section steel

?分段开关    section switch

?剖面积,截面积    sectional area

?分节式锅炉    sectional boiler

?分段浮坞    sectional floating drydock

?扶手    secure hand

?锁固装置    securing arrangement

?沈淀箱    sediment box

?熔锥(高温计)    seger cone