thin layer chromatography,薄層色譜法

thin orifice plate,薄孔板

third octave filter,1/3倍頻程濾波器

third-octave filter set,1/3倍頻程濾波器組

Thomson (double) bridge,湯姆生（雙臂）電橋

Thomson coefficient,湯姆生系數

Thomson effect,湯姆生效應

Thomson heat,湯姆生熱

threaded bezel ring,螺紋蓋環

threaded ends,螺紋連接端

threaded window,螺紋觀察窗

three angular array,三角陣

three component blance,三分力天平

three-step control,三位控制

three-step controller,三位控制器

three-terminal measuring,三端測量

three-terminal standard resistor,三端（鈕）標准電阻器

threshold,閾值

threshold of audibility,可听閾

threshold of pain,痛閾

threshold speed,起始流速

threshold unit,門檻單元

throat,喉部

throttling device,節流裝置

throttling element,節流件

thunderstorm,雷暴

tidal height,潮高

tidal height datum plane of the station,測站潮高基准面

tidal observatory,驗潮站

tadal range,潮差

tide,潮汐

tide gauge,驗潮儀

tide gauge well,驗潮井

tide staff,驗潮杆；水尺

tight ion source,封閉式离子源

time base,時間軸；時基

time-base pressing circuit,時基壓縮電路

time constant,時間常數

time constant index,時間常數指數

time constant of strain instruments,應變儀時間常數

time delay,時延

time delay system,時滯系統

time-derived channel,時分信道

time-division multiplexing,時分多路轉換

time domain,時域

time domain analysis,時域分析

time domain induced polarization instrument,時間域激電儀

time domain matrix,時域矩陣

time domain matrix method,時域矩陣法

time domain method,時域法

time domain model reduction method,時域模型降价法

time-of-flight mass spectrometer,飛行時間質譜計

time-of-flight ultrasonic flowmeter,傳播時間式超聲流量計

time of passage of tracer cloud,示蹤云通過時間

time of recovery temperature,溫度回复時間

time optimal control,時間最优控制

time-oriented sequential control,時間定序順序控制

time per point,每點時間

time program,時間程序

time proportioning control,時間比例控制

time response,時間響應

time scale factor,時間比例尺

time schedule controller,時序控制器

time series analysis,時間序列分析

time shared control,分時控制

time-sharing control,分時控制

time-varying parameter,時變參數

time-varying system,時變系統

timeout,超時

timer,時標裝置

timer error,時標誤差

timing factor,標定系數

tin oxide series gas sensor SnO2 ,系气敏元件

tipping-bucket rain recorder,翻斗式雨量計

tipping-bucket raingauge,翻斗式雨量計

titration,滴定

titration curve,滴定曲線

token,令牌；權標

token bus,令牌總線

token passing procedure,令牌傳遞規程

tolerance,允差；容錯

tolerance between forward and backward in indicating value,示值進回程差

tomography,X射線層析照相術

top and bottom guiding,頂底導向

top-down development,自上而下開發

top-down testing,自上而下測試

top guiding,頂導向

top-loading balance,上皿天平

top-loading thermobalance,上皿式熱天平

topological structure,拓朴結构

toroidal throat Venturi nozzle,喇叭口喉部文丘里噴嘴

torque,轉矩；力矩

torque magnetometer,轉矩磁強計

torque transducer [sensor],力矩傳感器；轉矩傳感器

torque variator,力矩變換器

torque limit switch,力矩開關

torque magnetometr,轉矩磁強計

torque transducer,轉矩傳感器