﹛﹛L grader,L分級器 LaB6 cathode,六硼化鑭陰极
label,標號
labelling,加標
laboratory reliability test,實驗室可靠性試驗
laboratory salinometer,實驗室鹽度計
ladder diagram,梯形圖
lag compensation,滯后補償
lag module,滯后組件
lag network,滯后网絡
lag-lead compensation,滯后超前補償
Lagrangian method,拉格朗日法
Laman spectrophotometer,拉曼分光光度計
laminar low,層流
laminated glass window,層壓玻璃觀察窗
laminated magnet,積層磁鐵
landing impact testing machine,落錘式衝擊試驗机
Laplace transform,拉普拉斯變換
Laplace-Gauss distribution,拉普拉斯﹛高斯分布
large scale system,大系統
large scale system cybernetics,大系統控制論
large volume sampler,大容量采水器
laser,激光器
laser alignment instrument,激光導向儀
laser anemometer,激光風速計
laser atomizer,激光原子化器
laser beam ionization,激光電离
laser ceilometer,激光測云儀
laser distance meter,激光測距儀
laser ellipseness measuring instrument,激光橢圓度測量儀
laser fluorescence detector,激光熒光探測儀
laser geodynamic satellite（LAGEDS),激光測地衛星
laser gravimeter,激光重力儀
laser inside diameter measuring instrument,激光內徑測量儀
laser interferometer,激光干涉儀
laser interferometry,激光干涉測量
laser length measuring instrument,激光式測長儀
laser level,激光水准儀
laser microspectral analyzer,激光顯微光譜分析儀
laser orientation instrument,激光指向儀
laser outside diameter measuring instrument,激光外徑測量儀
laser plummet,激光垂准儀
laser printer,激光印刷机
laser probe mass spectrometer,激光探針質譜計
laser scatterometer,激光散射計
laser sensor,激光傳感器
laser spectrum radiator,激光光譜輻射計
laser tachometer,激光轉速儀
laser theodolite,激光經緯儀
latent heat,潛熱
lateral logger,側向測井儀
lateral probe movement,左右掃查
lateral scan,左右掃查
lead capacitance,接線電容
lead compensation,超前補償
lead inductance,接線電感
lead/lag module,超前/滯后組件
lead module,超前組件
lead network,超前网絡
leading edge,前緣
leading peak,前伸峰
leak pressure,泄漏壓力
leakage current screen,泄漏電流屏蔽
leakage magnetic field,漏磁場
leakage magnetic field inspection,漏磁探傷法
leakage magnetic flow detector,漏磁探傷儀
leakage resistance,漏電阻
least-squares line,最小二乘直線
least-squares linearity,最小二乘線性度
length,長度 length control device,定長裝置
length of a scale division,標度分格間距；分格（度）長度
lengthy bellows,長波紋管
lens micrometer,透鏡測微器
level,水准儀；水准器；水准泡；級；電平；物位
level recorder,電平記錄儀
level transducer(sensor),物位傳感器
leve-braked motor,杠杆式制動電動机
lever-type vibrograph,杠杆式測振儀
library,程序庫
library searching,譜庫檢索
life,壽命
life of X-ray tube,X射線管壽命試驗
lift of hydrofoil,水翼升力
lift-drag of towed vehicle,拖曳体升阻比
lift-off effect,提高效應
ligand chromatography,配位体色譜法
light button,光按鈕
light digital logging instrument,輕便數字測井儀
lightning,閃電
limit alarm sensor,极限報警檢測器
limit equivalent conductance,极限當量電導
limit frequency,极限頻率
limit of detection,檢測限
limit of intrinsic error,基本誤差限
limit resolution,极限分辨率
limit switch,限位開關
limited breathing enclosure,限制通气外殼
limited current,极限電流
limiting availability,极限可用度
limiting control,极限控制
limiting effective wavelength,极限有效波長
limiting operationg condition,极限工作條件
limiting temperature,极限溫度
limiting vacuum,极限真空度
limiting value for operation,工作极限值
limiting value for storage,貯存极限值
limiting value for transport,運輸极限值
limits of error,誤差（极）限
limits of operating error,工作誤差根限
line,線路
line-at-time printer,行式印刷机[打印机]；一次一行印刷机
line-by-line scanning,面掃描
line coupler,線路耦合器
line focus,線焦點
line frame,線路幀
line pair,線對
line printer,行式打印机[印刷机]；一次一行印刷机
line protocol,線路協議
line scanning,線掃描
line sensitivity,線靈敏度
line strain,線應變
line to line resolution,線分辨力
line turnaround,線路換向
line voltage regulation,電源電壓調整率
linear absorption coefticient,線性吸收系數
linear acceleration,線加速度
linear acceleration transducer[sensor],線加速度傳感器
linear array,線陣
linear control system,線性控制系統
linear control system theory,線性控制系統理論
linear conversion,線性轉換
linear dispersion,線色散
linear displacement,線位移
linear displacement grating,直線位移光柵
linear dual slope type,線性雙斜型
linear electric actuator,電子直線加速器
linear location,線定位
linear motion valve,直行程閥
linear optimal control system,線性最优控制系統
linear prediction,線性預報
linear programming,線性規划
linear ramp type,線性斜坡型
linear range,線性范圍
linear scale,線性標度
linear system,線性系統
linear system simulation,線性系統仿真
linear thermistor,線性熱敏電阻器
linear thermodilatometry,線膨脹法
linear time-invariant control system,線性定常控制系統
linear time-varying control system,線性時變控制系統
linear velocity,線速度
linear vilocity transducer[sensor],線速度傳感器
linear visous damping,線性粘性阻尼
linear viscous damping coefficient,線性粘性阻尼系數
linearity,線性度
linearity error,線性度誤差
linearity of amplifier,放大器線性；垂直線性
linearity of time base,時基線性
linearization,線性化
linearization technique,線性化方法
linearized model,線性化模型
lineman's spectrometer,攜帶式光譜儀
linescan,線掃描曲線
link resistance,跨線電阻
linkage,鍵接
linkage editor,連接編輯程序
linked-scanning,聯動掃描
liquid chromatograph,液相色譜儀
liquid chromatograph-mass spectrometer(LC-MS),液相色譜﹛質譜聯用儀
liquid chromatograph-mass spectrometer interface;LC-MS interface, 液相色譜﹛質譜聯用儀接口
liquid chromatography,液相色譜法
liquid chromatography-mass spectrometry(LC-MS),液相色譜﹛質譜法
liquid column(of liquid-inglass thermometer),（玻璃溫度的）液柱
liquid columnm manometer,液柱壓力計
liquid crystal thermometer,液晶溫度計
liquid densitometer,液体密度計
liquid density transducer[sensor],液体密度傳感器
liquid displacement system,液体置換系統
liquid displacement displacement technique,液体置換法
liquid filled case,充液壓力表
liquid-in-glass thermoneter,玻璃溫度計
liquid junction potential,液接電位
liquid-liquid cromatography,液液色譜法
liquid phase loading,液相載荷量
liquid pressure recovery factor,液体壓力恢复系數
liquid refraction meter,標尺折光儀
liquid selaed drum gas flowmeter,液封轉筒式气体流量計
liquid-solid chromatography,液固色譜法
liquid surface acoustical holgraphy,液面聲全息
liquid thermometer,液体溫度表
liquid thermostatic bath,液体恒溫槽
liquid visual expansion coefficient,液体視膨脹系數
list,表
list processing,表處理
listener,收听站
lithium chloride humidity-dependent resistor,氯化鋰顯敏電阻器
live time,活時間
load,負荷
load amplitude,負荷幅
load cell,稱重[負載]傳感器
load regulation,負載調整率
loading error,負載誤差
loading system,加荷系統
local area network(LAN),局域网
local asymptotic stability,局部漸近穩定性
local automation,局部自動化
local controller,局部控制者
local data base,局部數据庫
local decision mader,局部決策者
local feedback,局部反饋
local lightning counter,局地閃電計數器
local magnetization,局部磁化
Local Operating Net Works;LON Works,LON Works總線;局部操作网絡
local optimum,局部最优
local stability,局部穩定性
location counter,位置計數器
lock-out submersible,可出艙潛水的潛水器
lock signal,鎖信號
log magnitude-frequency characteristics,對數幅頻特性
log magnitude-phase diagram,對數幅相圖
log phase-frequency characteristics,對數相頻特性
logarithmic amplifier,對數放大器
logarithmic decrement,對數衰減
logarithmic gain,對數增益
logger,測井儀器
logging recorder,測井記錄儀
logging tool,下井儀器
logic control,邏輯控制
logical address,邏輯地址
logical control,邏輯控制
logical model,邏輯模型
logical ring,邏輯環
long distance water level recorder,遙測水位計
long period seismograph,長周期地震儀
long-radius nozzle,長徑噴嘴
long term running test,長期運轉試驗
longitudinal magnetization,縱向磁化
longitudinal magnetizing ampere turn,縱向磁化安匝數
longitudinal resolution,縱向分辨力 l
ongitudinal wave,縱波
longitudinal wave probe,縱波探頭
longitudinal wave technique,縱波法
look-at-me(LAM),請求注意
look-at-me line,請求注意線；L線
look-at-me request,LAM要求]
look-at-me signal,請求注意信號；L信號
loop galanometer,回線式振動子
loopback checking,回送檢驗
loudenss contours,等響曲線
ludness,響度
loudness level,響度极
low altitude sonde,低空探空儀
low cost autonation,低成本自動化
low e.m.f.potentiometer,低電位電位差時
low electron energy diffractometer(LEED),低能電子衍射儀
low frequency fatigue testing machine,低頻疲勞試驗机
low limiting control,下限控制
low noise valve,低噪聲閥
low-recovery valve,低壓力恢复閥
low speed balancing,低速平衡
low-speed magneto synchronous motor,永磁式低速同步電動机
low temperature humidity chamber,低溫恒溫恒濕箱
low temperature strain gauge,低溫應變計
low temperature test,低溫試驗
low-temperature test chamber,低溫試驗箱
low temperature testing machine,低溫試驗机
low temperature thermistor,低溫熱敏電阻器
low-temperature treatment,低溫處理
low tension loop,低壓回路
low voltage terminal,低壓端
low water,低潮
lower actual measuring range value,實際測量范圍下限值
lubricator,注油器
luminance transducer[sensor],亮度傳感器
luminous flux,光通量
luminous intensity,發光強度
lysimeter,滲水測定器
