structured programming language,結构化程序設計語言

student's distribution,學生氏t分布

stylus,筆尖

stylus printer,針式打印机

stylus recorder,針式記錄儀

subaddress,子地址

sub-bottom seismic profiling system,海底地層剖面儀

subharmonic,次諧波

subharmonic resonance response,分諧波共振響應

subharmonic response,分諧波響應

subharmonic wave,分諧波

subjective probability,主觀概率

sublimating heat,升華熱

submersible,潛水器

suboptimal control,次优控制

suboptimal system,次优系統

suboptimality,次优性

subroutine,子程序

subroutine call,子程序調用

substitution method,替代法

substitution (method of) measurement,替代測量（法）

subsurface buoy system,水下浮標系統

subsystem,次系統

successive approximation type,逐次逼近型

sufficient burning,充分燃燒

sulfur dioxide analyzer,二氧化硫分析儀

SUM byte,總和字節

sum peak,和峰

summation [totalizing] current transformer,總和[總加]電流互感器

summation instrument,總和儀表

summer,加法器

summing point,相加點

sunshine,日照

sunshine duration,日照時間

sunshine recorder,日照計；日光儀

sunshine weather meter,陽光耐气候試驗箱

supper-coated open-tubular; SCOT column,涂載体空心柱

superconducting electromagnetic lens,超導電磁透鏡

superconducting magnetometer,超導磁力儀

superconducting quantum magnetometer,超導量子磁強計

superconductive gravimeter,超導重力儀

supervision,監控

supervision level,監控級

supervisor,監控站

supervisory computer control system,計算机監控系統

supervisory control,監督控制

supervisory program,管理程序

supplementary insulation,輔助絕緣

supply apparatus,電源裝置

support,載体

support program,支持程序

support type current transformer,支持式電流互感器

supporting electrode,支持電极

supporting knife-plane,承重刀座

supporting pin,支力銷

suppressed-zero range,零點下降范圍

suppressed-zero scale,抑零標度

surface acoustic wave pressure transducer,表面聲波式壓力傳感器

surface acoustic wave transducer [sensor],聲表面波傳感器

surface analysis,表面分析

surface conductive humidity transducer [sensor],表面電導式濕度傳感器

surface echo,表面反射波

surface emission ion source,表面發射离子源

surface finish,表面粗糙度

surface finish measuring instrument,表面粗糙度測量儀

surface finish transducer [sensor],表面粗糙度傳感器

surface gradient sampler,表面梯度采水器

surface mounted (pressure) gauge,凸裝壓力表

surface replica,表面复型

surface tension balance,表面張力天平

surface thermometer,表面溫度計

surface visibility,地面能見度

surface wave,表面波

surface wave probe,表面波探頭

surface wave technique,表面波法

surge pressure,衝擊壓力

surplus sensitivity,靈敏度余量

susceptibility meter,磁化率儀

suspension system,懸挂系統

suspension theodolite,懸式經緯儀

sustained oscillation,自持振蕩

sweep,掃描

sweep device,掃描裝置

sweep rate,掃描速率

swee,涌；浪

swing period,擺動周期

swinging plate anemometer,壓板風速表

swirl angle,旋渦角

swirl reducer,旋渦消除器

swirling flow,旋渦流

switch,開關

switching box,切換箱

switching error,切換誤差

switching frequency,開關頻度

switching point,切換點

switching time,切換時間

switching value,切換值

symbol of a unit (of measurement),（測量）單位的符號