soil oven,烘土箱

soil thermometer,直管地溫表

solar constant,太陽常數

solar radiation,太陽輻射

solarigraph,總日射計

solarimeter,總日射表

solenoid,螺線管

solenoid coil,電磁線圈

solenoid valve,電磁閥

solenoid valve for freon,氟里昂用電磁閥

solenoid valve for gas,煤气電磁閥

solenoid valve for steam,蒸气電磁閥

solenoid valve for water,水用電磁閥

solid electrolyte oxygen analyzer,固体電解質氧分析器

solid front case with pressure relief at back,后部帶泄壓裝置的前封式外殼

solid scanning length measuring instrument,固体掃描式測長儀

solid scanning transducer,固体掃描傳感器

solid scanning width meter [gauge],固体掃描式寬度計

solid-stage electrolyte gas transducer [sensor],固体電解質气体傳感器

solid-state electrolyte humidity transducer [sensor],固体電解質濕度傳感器

Solid-state electrolyte oin transducer [sensor],固体電解質离子傳感器

solid-state (X-ray) detector,固態（X射線）檢測器

solid-stem liquid-in-glass thermometer,棒式玻璃溫度計

solo,單獨布置；單獨檢測

solvent removable dye penetrant testing method,溶劑去除著色滲透探傷法

solvent removable penetrant,溶劑去除性滲透液

sonar,聲納

sonar dome,聲納導流罩

sone,宋（響度單位）

sonic [critical] Venturi nozzle,音速[臨界]文丘里噴嘴

sonic logger,聲速測井儀

sonic nozzle,音速噴嘴

sound daffle,聲障板

sound energy density,聲能量密度

sound field,聲場

sound intensity,聲強

sound intensity level,聲強級

sound level,聲級

sound level calibrator,聲級校准器

sound level meter,聲級計

sound power,聲功率

sound power level,聲功率計

sound pressure,聲壓

sound pressure level,聲壓級

sound pressure transducer [sensor],聲壓傳感器

sound radiation,聲輻射

sound ray tracking plotter,聲線軌跡儀

sound reflector,聲反射器

sound source,聲源

sound spectrum,聲譜

sounding,探測

source language,源語言

source of electron gun grid bias,電子槍柵偏壓電源

source of radiation,輻射源

source program,源程序

source slit,离子源狹縫

space byte,空格字節

space remote sensing,航天遙感

space telemetry,航天遙測

spacelab,太空實驗庫

spacer,襯圈；墊片

spaceship,宇宙飛船

span,量程

span calibration gas,量程校准气

span drift,量程漂移

span error,量程誤差

span of impact specimen supports,衝擊試樣支座跨距

span shift,量程遷移[偏移]

spark-proof instrument,安全火花型儀器

spark source,火花電离源

sparker,電火花震源

spatial filter,空間濾波器

spatial resolution,空間分辨率

special simulation technique,特殊仿真技術

specific acoustic impedance,聲阻抗率

specific gravity,比重

specific humidity,比濕

specific permeability,比滲透率

specific resistance,電阻率

specific retention volume,比保留体積

specific service (pressure) gauge,特殊用途壓力表

specific viscosity,比粘

specific weight,專用砝碼

specification,規格

specified characteristic curve,規定特性曲線

specified sensitivity,規定靈敏度

specimen,試樣；樣品

specimen chamber,樣品室

specimen cooling holder,致冷樣品台

specimen heating holder,加熱樣品台

specimen holder,樣品杯；樣品杆；試樣架

specimen-holder assembly,樣品（支持）器組件

specimen rotating holder,旋轉樣品台

specimen tensile holder,拉伸樣品台

spectral background,光譜背景

spectral bandwidth,光譜帶寬

spectral characteristic curve,光譜特性曲線

spectral density,譜密度