seawater mercurometer,海水測汞儀

second specimen chamber,第二樣品室

secondary circuit,二次電路

secondary coil,二次線圈

secondary current,二次電流

secondary device,二次裝置

secondary electron detector,二次電子探測器

secondary ion,二次离子

secondary ion background,二次离子本底

secondary ion mass spectrometer (SIMS),二次离子質譜計

secondary ion mass spectrometry (SIMS),二次离子質譜法

secondary ion spectrometer,二次离子譜儀

secondary ion spectroscopy,二次离子譜法

secondary limiting e.m.f.二次极限電動勢

secondary limiting thermal current,二次极限熱電流

secondary radar,二次雷達

secondary reference point,第二類參考點

secondary standard,副基准（器）

secondary standard seawater,幅標准海水

secondary voltage,二次電壓

secondary winding,二次繞組

sector magnetic analyzer,扇形磁分析器

sediment dynamics data acquisition system,沉積動力學數据測量系統

sedimentation balance,沉降天平

Seebeck coefficient,塞貝克系數

Seebeck effect,塞貝克效應

Seebeck(thermal) electromotive force,塞貝克（熱）電勢

segment,扇形齒輪

segmental orifice plate,圓缺孔板

seismic analog computer,地震模擬計算机

seismic data acquisition system (SDAS),數字地震儀

seismic data recording system (SDRS),數字地震儀

seismic digital computer,地震數字計算机

seismic effects,地震效應

seismic group recorder system (SGR),分組式遙測型地震儀

seismic group telemetry system (SGT),分組式遙測型地震儀

seismic logger,地震測井儀

seismic prospecting instrument,地震勘探儀器

seismic record,地震記錄

selected area electron amplification image,選區電子放大象

selected area electron diffraction image,選區電子衍射象

selecting,選擇

selective absorption,選擇吸收

selective radiator,選擇輻射体

selectivity,選擇性

selectivity coefficient,選擇系數

self-absorption,自吸

self-actuated regulator,自力式調節閥

self-compensating propeller,自補償旋槳

self-contained STD profiling system,自容式溫鹽深剖面儀

self-diagonostic alarm panel,自診斷報警畫面

self-electrode,自由极

self-excitation optical pumping magnetometer,自激式光泵磁力儀

self-excited vibration,自激勵振動

self-heating,自熱

self-heating error,自熱誤差

self-induced vibration,自激振動

self-latch solenoid valve,保持式電磁閥

self-operated controller,自力式控制器

self-operated controller,自力式控制器

self-operated differential pressure regulator,自力式差壓調節閥

self-operated flow regulator,自力式流量調節閥

self-operated level regulator,自力式液位調節閥

self-operated level regulator,自力式液位調節閥

self-operated pressure regulator,自力式壓力調節閥

self-operated regulator,自力式調節閥

self-operated temperature regulator,自力式溫度調節閥

self-optimizing control,自尋优控制

self-optimizing system,自尋优系統

self-programming,自編程

self-reducing techeometer,自動歸算速測儀

self-regulating,自調整

self-rapairing,自修复

self-temperturecompensated strain gauge,溫度自補償應變計

self-tuning,自校正

self-tuning control,自校正控制

semantic network,語義网絡

semi-anechoic chamber,半電波暗室

semi-automatic logging instrument,半自動測井儀

semi-automatic testing machine,半自動試驗机

semi-automation,半自動化

semiconducting specimen stage,半導体樣品台

semiconductor strain gauge,半導体應變計

semidigital readout,半數字讀出

semi-graphic panel,半模擬盤[屏]

semi-physical simulation,半實物仿真

sensing clement,敏感元件；檢測元件

sensing gorque shaft,轉矩傳感軸

sensitive grid,敏感柵

sensitive limit,靈敏限

sensitivity,靈敏度

sensitivity analysis,靈敏度分析

sensitivity coefficient,靈敏度系數

sensitivity drift,靈敏度漂移

sensitivity of microphone,傳聲器靈敏度

sensitization type inclinometer,感光記錄測斜儀

sensor,檢測元件；傳感元件；傳感器

sensor with bare wire sensitive element,裸絲敏感元件傳感器