U boltU形螺栓，馬蹄形螺栓
U formatU格式
U grooveU型坡口
U groove weldingU型坡口焊
U ironU形鋼，槽鋼
U linkU形連接線(xiàn)
U nutsU形螺帽
U punchU型沖頭
U-O pressU形-O形成形機(jī)
U-antennaU形天線(xiàn)
U-bend dieU型彎曲模
U-clampU形夾
U-clipU形線(xiàn)夾
U-cylinder共燃燒室發(fā)動(dòng)機(jī)
U-engineU型發(fā)動(dòng)機(jī)
U-magnetU形磁鐵，馬蹄形磁鐵
U-nutU型螺母
U-portU型端口
U-shaped coreU形鐵心
U-shaped expansion pipeU形膨脹管
U-shaped magnetic coreU形磁心
U-steelU字鋼，槽鋼
U-tube manometerU形管壓力計(jì)
UDDS(Urban Dynamometer Schedule) 市區(qū)測(cè)功器程序
UJ(Universal Joint)萬(wàn)向節(jié)
UKPIA(United Kingdom Petroleum Industry Association) 英國(guó)石油工業(yè)協(xié)會(huì)
ULEV(Ultra-Low-Emission Vehicle California) (加利福尼亞)超低排放汽車(chē)
ULW(Unladen Weight of commercial vehicle) (商用汽車(chē))空車(chē)質(zhì)量
UNI(User Network Interface )用戶(hù)網(wǎng)絡(luò)接口
UNIX Operating SystemUNIX操作系統(tǒng)
USABC(United States Advanced Battery Consortium) 美國(guó)先進(jìn)蓄電池聯(lián)合
UV dosimeter紫外線(xiàn)表
UVW anemometer三維風(fēng)速表
Ultimate pressure極限壓力
Ultramicrotome超微切片機(jī)
Ultraperm烏托拉普姆高透磁合金
United State Space Activities美國(guó)航天
United State Space Shuttle Project美國(guó)航天飛機(jī)工程
United State Space Tracking Networks美國(guó)航天測(cè)控網(wǎng)
United States Aviation美國(guó)航空
ubicon紫外線(xiàn)攝像管
ubitron波動(dòng)射束注人器
ucsiconUCS圖標(biāo)，USC 圖示
ultimate極限，終極
ultimate aim終極目標(biāo)
ultimate bearing capacity極限承載力
ultimate bending strength極限彎曲強(qiáng)度
ultimate design極限狀態(tài)設(shè)計(jì)
ultimate design method極限狀態(tài)設(shè)計(jì)法
ultimate elongation極限伸長(zhǎng)率
ultimate extension極限延伸
ultimate factor of safety極限安全系數(shù)
ultimate life極限使用壽命
ultimate limit switch極服限制開(kāi)關(guān)，極限限位開(kāi)關(guān)
ultimate load極限荷載
ultimate mechanical property極限力學(xué)性質(zhì)
ultimate output極限輸出，最大輸出
ultimate resilience極限回彈性
ultimate strain極限應(yīng)變
ultimate strength極限強(qiáng)度
ultimate stress極限應(yīng)力
ultimate tensile strength極限抗張強(qiáng)度
ultimate tensile stress極限張應(yīng)力
ultimate trip current極限跳閘電流，最終脫扣電流
ultimate trip limit極限脫扣電流值，最終跳閘界限
ultimate use temperature極限使用溫度
ultimate vacuum極限真空
ultimate working capacity極限工作容量
ultimate-high-strength steel極限高強(qiáng)度鋼
ultimately終于
ultor(陰極射線(xiàn)管的)最高壓陽(yáng)極
ultra high frequency超高頻
ultra high viscosity index超高粘度指數(shù) [UHVI]
ultra low emissions vehicle超低排放汽車(chē) [ULEV]
ultra narrowband filters超窄頻濾光鏡
ultra porcelain超高頻(絕緣)瓷料
ultra sonic超聲的，超音的
ultra thermometer超高溫溫度計(jì)
ultra thin-film capacitor超薄膜電容器
ultra-audio wave超聲波
ultra-audion超三極管，反饋柵極檢波器
ultra-audion current超再生電路，超三極管電路
ultra-audion oscillator超三極管振蕩器，超再生振蕩器
ultra-fine grain steel超細(xì)晶組織鋼
ultra-high strength steel超高強(qiáng)度鋼
ultra-high tensile steel超高強(qiáng)度鋼
ultra-high vacuum超高真空
ultra-high voltage超高壓
ultra-high voltage electron microscope超高壓電子顯微鏡
ultra-high-frequency converter超高頻變頻器
ultra-high-frequency generator超高頻發(fā)生器
ultra-high-frequency oscillator超高頻振蕩器
ultra-high-frequency receiver超高頻接收機(jī)
ultra-high-frequency translator超高頻電視差轉(zhuǎn)機(jī)，超高頻電視轉(zhuǎn)發(fā)機(jī)
ultra-high-frequency transmitter超高頻發(fā)射機(jī)
ultra-high-frequency wave①超高頻電波，超短波②超高頻調(diào)諧器
ultra-high-speed internal grinder超高速內(nèi)圓磨床
ultra-large crude carrier超級(jí)油輪
ultra-light alloy超輕合金
ultra-low temperature超低溫
ultra-low-melting alloy超低熔合金
ultra-low-volume sprayer超低量噴霧器
ultra-microelectrode超微型電極
ultra-thin tinplate極薄鍍錫薄鋼板
ultra-violet and visible spectrophotometer紫外可見(jiàn)光分光光度計(jì)
ultracentrifuge超速離心機(jī)
ultradyne receiver超外差接收機(jī)
ultrafax電視高速傳真，電視傳真電報(bào)
ultrahigh vacuum超高真空
ultrahigh-frequency band超高頻波段(300-3000兆赫)
ultralinear超線(xiàn)性的
ultralong wave超長(zhǎng)波
ultralong wave spectrometer超長(zhǎng)波光譜儀
ultralow frequency超低頻
ultramicrostrncture超微結(jié)構(gòu)
ultramicrotechnique超微技術(shù)
ultramicrotomy超薄切片術(shù)
ultramicrowave超微波
ultraphonic rays視外線(xiàn)
ultrared heating紅外線(xiàn)加熱
ultrared ray紅外線(xiàn)
ultrashort wave超短波
ultrashort wave transmission超短波發(fā)射
ultrashort wave transmitter超短波發(fā)射機(jī)
ultrasonator超聲波發(fā)生器
ultrasonic Doppler blood pressure sensor超聲多普勒血壓傳感器
ultrasonic Doppler blood pressure transduce超聲多普勒血壓傳感器
ultrasonic analyser超聲波探傷儀
ultrasonic anemometer超聲波風(fēng)速表
ultrasonic apparatus for material testing超聲波材料試驗(yàn)儀
ultrasonic beam超聲波束
ultrasonic bonding超聲波焊接
ultrasonic brazing超聲波銅焊，超聲波釬焊
ultrasonic camera超聲波攝像機(jī)
ultrasonic communication超聲波通信
ultrasonic delay line超聲波延遲線(xiàn)
ultrasonic detection超聲波探傷
ultrasonic detector超聲波探測(cè)器
ultrasonic disc cutter超聲樣品切割機(jī)
ultrasonic drill超聲鉆
ultrasonic drilling超聲鉆法
ultrasonic equipment超聲波裝置
ultrasonic erosion超聲腐蝕