D篇：
D and D/2 pressure tappings,D和D/2取压口
D-port,D型端口
DC-DC LVDT displacement transducer,直流差动变压器式位移传感器
d.c.bridge for measuring high resistance,直流高阻电桥
d.c.bridge for measuring resistance,测量电阻用的直流电桥
d.c.comparator potentiometer,直流比较仪式电位差计
d.c.comparator type bridge,直流比较仪式电桥
d.c.potentiometer,直流电位差计
d.c.power voltage ripple,直流电源电压纹波
d.c.resistance box,直流电阻箱
d.c.resistor volt ratio box,直流电阻分压箱
d.c.voltage calibrator,直流电压校准器
Daly detector,戴利检测器
damped frequency,阻尼频率
damped natural frequency,阻尼固有频率
damped oscillation,阻尼振荡
damper,阻尼器
damping,阻尼
damping action,阻尼作用
damping characteristic,阻尼特性
damping constant,阻尼常数
damping deflection period,阻尼比
damping torque,阻尼力矩
damping torque coefficient,阻尼力矩系数
dangerous articles package,危险品包装
dark field electron image,暗场电子象
data,数据
data acquistion,数据采集
data acquisition equipment,数据采集设备
data acquisition station,数据采集站
data base,数据库
data base management system,数据库管理系统
data buoy system,数据浮标系统
data circuit,数据电路
data circuit-terminating equipment(DCE),数据电路终接设备
data communication,数据通信
data concentration,数据集中
data concentrator,数据集中分配器
data driven,数据驱动
data encryption,数据加密
data flow diagram,数据流图
data highway,数据公路
data integrity,数据完整性
data link,数据链路
data link layer(DLL),数据链路层
data link protocol specification,数据链路协议规范
data link service definition,数据链路服务定义
data logger,数据记录装置
data logging,数据记录
data network,数据网络
data preprocessing,数据预处理
data processing,数据处理
data processing system,数据处理器[机]
data set,数传机
data signalling rate,数据传信率
data sink,数据宿；数据接收器
data source,数据源
data station,数据站
data terminal equipment,(DTE),数据终端设备
data transfer,数据传递
data transfer rate,数据传送率；数据传输速率
data transmission,数据传输
data transmission interface,数据传输接口
dataway,（机箱）数据路
dataway operation,（机箱）数据路操作
dead band,死区
dead band error,死区误差
dead layer,死层
dead time,时滞；死时
dead volume,死体积；静容量
dead weight tester,活塞式压力计
dead zone,盲区
dead zone error,死区误差
debugging,调试
decade resistance box,十进电阻箱
decalibration,标定降级
decentrality,分散性
decentralization,分散化
decentralized control,分散控制
decentralized control system,分散控制系统
decentralized model,分散模型
decentralized robust control,分散鲁棒控制
decentralized stochastic control,分散随机控制
decision analysis,决策分析
decision model,决策模
decision program,决策程序
decision space,决策空间
decision support system,决策支持系统
decision table,判定表
decision theory，决策（理）论
decision tree,决策树
decrement ratio,减幅比
deep sea instrument capsule,深海仪器舱
defect,缺陷
defining fixed point,定义固定点
definitionm,清晰度
deflecting torque,偏转力矩
deflection,挠度
deflection method,偏位法
deflection period,摆动周期
defocus contrast,离焦衬度
dehumidification,除湿
dehumidifier,除湿器
delay distance,滞后距离
delay time,滞后时间
delayed echo,迟到反射波
delayed telemetry,延时遥测
delimiter bit,定界位
delimiter byte,定界定节
delta-T,时间差；时差
delta-T timing unit,时差计时单元
demagnetization,退磁
demagnetizer,退磁机；退磁装置
demagnetizing coil,消磁线圈
demand,请求
demand handling,请求处理
demand message,请求报文
democratic system,民主系统
demodulation,解调
demodulator,解调器
densitometer,密度计；黑度计
density,密度
density correction,密度修正
density logger,密度测井仪
density meter(of ionizing radiaiton),（电离辐射）密度计
density of heat flow,热流密度
density of snow,积雪密度
density(photographic),（照相的）黑度
density transducer[sensor],密度传感器
depressor,沉降器
depth bellows,深波纹管
depth controller,深度控制器
depth of field,景深
depth of focus,焦深
depth of penetration,穿透深度
depth of snow,雪深
depth scan,前后扫查
depth sounding,测深
derivative absorption spectrum,导数吸收光谱
derivative action;D-action,微分作用；D-作用
derivative action coefficient,微分作用系数
derivative action gain,微分作用增益
derivative action time,微分作用时间
derivative differential thermal analysis,导数差示热分析
derivative differential thermal curve,导数差示热曲线
derivative dilatometry,导数膨胀法
derivative feedback,微分反馈
derivative thermogravimetric curve,导数热重曲线
derivative thermogravimetry,导数热重法
derivative unit,微分器
derived unit(of measurement),导出（测量）单位
describing function,描述函数
design automation,设计自动化
design constant,设计常数
design distance,设计距离
design of simulation dxperiment,仿真实验设计
designed immersion depth,设计浸入深度
desired value,预期值
desorption chemical ionization(DCI),解吸化学电离
destination,目的站
detectability,可检测性；能检测性；检测能力
detectability(chromatographic),（色谱）检测限
detecting instrument,检出器；检测元件；检波器
developer,显示剂
development tank,展开罐
deviation,偏差
deviation alarm sensor,偏差报警检测器
deviation from lonearity,偏离线性度
deviation of the e.m.f.(with respect to the certified value), 电动势的偏差值（相对于检定值)
device,装置
Device Net，Device Net 总线；装置网
dew cell,露池
dew-point,露点
dew-point hygrograph,露点计
dew point hygrometer,露点湿度计；露点湿度表
dew point temperature,露点温度
dew point transducer[sensor],露点传感器
dewgauge,露量表；露量器
diagnostic function,诊断功能
diagnostic model,诊断模型
diagnostic program,诊断程序
diagonal beam,斜束
dial,标度盘
diameter,直径
diameter ratio,直径比
diamond array,菱形阵
diaphragm,膜片；隔膜；保护膜
diaphragm actrator,薄膜执行机构
diaphragm capsule,膜盒
deaphragm gas meter,膜式煤气表
deaphragm(pressure)gauge,膜片压力表
diaphragm pressure span,膜片压力量程
diaphragm-seal(pressure) gauge,隔膜压力表
diaphragm strain gauge,膜片式应变计
diaphragm valve,隔膜阀
dielectric ampliude imduction logging instrument,幅度介电感应测井仪
dielectric phase induction logger,相位介电感应测井仪
difference absorption spectrum,差式吸引光谱
difference galvanometer,差动检流计
difference input,差分输入
differential amplifier,差动放大器
differential chromatography,差示色谱法
differential coil,差动线圈
differential ditector,微分型检测器
differential dilatometry,差示热膨胀法
differential error of the slope,斜率的微分误差
differential galvanometer,差动检流计
differential gap,切换差
differential Manchester encoding,差分曼彻斯特编码
differential measurement,微差测量
differential measuring instrument,差动测量仪表
differential method of calibrating thermocouple,热电偶微差检定法
differential method of measurement,微差测量法
differential pistorn,差动活塞
differential preamplifier,差动前置放大器
differential pressure,差压
differential pressure devices,差压装置
differential pressure flow transducer[sensor],差压流量传感器
differential pressure flowmeter,差压流量计
differential(pressure)gauge,差压压力表
differential pressure level transducer[sensor],差压（式）物位传感器
differential pressure ratio,差压比
differential pressure transducer[sensor],差压传感器
differential read-out,差动读出
differential refraction detector,示差折光检测器
differential scanning calorimeter,差示扫描量热仪
differential scanning calorimetry(DSC),差示扫描量热法
differential thermal analysis(DTA),差（示）热分析
differential thermal analysis curve,差热曲线
differential thermal analysis in an isothermal environment, 等温环境下的差示热分析 differential thermal analysis meter,差示热分析仪；DTA仪
differential thermal analyzer,差热）分析）仪
differential thermal curve,差示热曲线；DTA曲线
differential thermocouple,差分热电偶；差示热电偶
differential thermometric titration,差热滴定（法）
differential transducer,差动换能器
differential transformer,差动变压器
differential transformer displacement transducer,差动变压器式位移传感器 (differential)transformer pressure transducer,（差动）变压器式压力传感器 diffraction grating,衍射光栅
diffraction lens,衍射透镜
diffraction resolution,衍射分辨力
diffuse field,扩散声场
diffuse-field response of microphone, 传声器扩散声场频率响应；传声器扩散场响应 diffuse-field sensitivity of microphone,传声器扩散场灵敏度
diffused dilicon semiconductor force meter,扩散硅式测力计
diffused silicon semiconductor force transducer,扩散硅式力传感器
diffrsed silicon semiconductor tensiometer,扩散硅式张力计 diffused type semiconductor strain gauge,扩散型半导体应变计
diffusion current,扩散电流
diffusion pump,扩散泵
digital ammeter,数字电流表
digital communication,数字通信
digital compensation,数字补偿
digital computer,数字计算机
digital control,数字控制
digital control system,数字控制系统
digital controller,数字控制器
digital data,数字数据
digital data acquisition system,数字数据采集系统
digital data processing system,数字数据处理系统
digital deep-level seimograph,数字深层地震仪
digital displacement measuring instrument,数字式位移测量仪
digital displacement transducer,数字式位移传感器
digital electric actuator,数字式电动执行机构
digital feedback system,数字反馈系统
digital filter,数字滤波器
digital fluxmeter,数字磁通表
digital frequency meter,数字频率表
digital information processing system,数字信息处理系统
digital input,数字输入
digital integrating fluxmeter,数字积分式磁通表
digital logging instrument,数字测井仪
digital magnetic tape record type strong-motion instrument, 数字磁带记录强震仪 digital magnetic telluro sounding instrument,数字大地电磁测深仪
digital measuring instrument,数字式测量仪器仪表
digital multimeter,数字万用表；数字复用表
digital ohmmeter,数字电阻表
digital ouput,数字输出
digital phase meter,数字相位表
digital position transmitter,数字式位置发送器
digital positioner,数字式定位器
digital power driver,数字功率表
digital pressure gauge,数字压力表
digital readout,数字读出
digital representation of a physical quantity,物理量的数字表示
digital seismic recoridng system,数字地震仪
digital signal,数字信号
digital signal analyzer,数字信号分析仪
digital signal processing,数字信号处理
digital simulation,数字仿真
digital simulation computer,数字仿真计算机
digital strain indicator,数字应变仪
digital system,数字系统
digital telemetering system,数字遥测系统
digital transducer[sensor],数字传感器
digital valve,数字阀
digital voltmeter,数字电压表
digital-analog conversion,楼模转换
(digital-analog)hybrid computer,（数字模拟）混合计算机
digital-analog simulator,数字模拟仿真器
digital-analogue converter;D/A converter,数—模转换器；D/A转换器
digitalization error,数字化误差
digitization,数字化
digitization error,数字化误差
digitizer,数字化仪
dilatometry,膨胀法
diluent gas,稀释气
dilution factor,稀释因数
dilution methods,稀释法
dilution ratio[rate],稀释比[率]
dimension,尺度
dimension transducer[semsor],尺度传感器
Dines anemometer,达因风速表
diopter,视度
dip logger,地层倾角测井仪
direct acting instrument,直接作用仪表
direct acting recording instrument,直流作用记录仪
direct action,正作用
direct action solenoid valve,直动式电磁阀
direct actuator,正作用执行机构
direct-comparison method of measurement,直接比较测量法
direct control layer,直接控制层
direct-current linear variable differential transformer(DC-DC LVDT), 直流差动变压器 direct digital control station ,直接数字控制站
direct digital control,直接数字控制
direct heated type thermistor,直热式热敏电阻器
direct-imaging mass analyser,直接成象质量分析仪
direct injection burner,直接注入燃烧器
direct injector,直流进样器
direct method of measurement,直接测量法
direct mounting gauge,直接安装压力表
direct-operated regulator,直接作用式调节阀；自力式调节阀
direct probe inlet,直接探头进样
direct reading current meter,直读式海流计
direct reading instrument,直读式仪器
direct record strong-motion instrument,直接记录式强震仪
direct resistance heating,直接电阻加热
direction focusing,方向聚焦
direction indicator,中心指示器
direction mark meter,方位标仪
directional frequency response of microphone,传声器指向性频率响应
directional pattern of microphone,传声器指向性图案
directivity,指向性
directivity index of microphone,传声器指向性指数
directly controlled system,直接被控系统
directly controlled variable,直接被控变量
director,指挥站
disappearing-filament optical pyrometer,隐丝式光学高温计
disc,阀板
disc plug,盘形阀芯
disc recorder,圆盘（形）记录仪
discharge coefficient,流出系数
discharge lamp,放电灯
discontinuous control,不连续控制
discontinuous control system,不连续控制系统
discontinuous simultaneous techniques,间歇联用技术；不连续同时串用技术
discrete control system,离散控制系统
discrete signal,离散信号
discrete system model,离散系统模型
discrete system simulation,离散系统仿真
discrete system simulation language,离散系统仿真语言
discriminant function,判别函数
discrimination,鉴别力
discrimination threshold,鉴别力阀
diskette,软磁盘
dispersion dose,散射剂量
dispersion power,色散本领
dispersive crystal,分光晶体
dispersive infra-red gas analyzer,色散红外线气体分析器
displacement,位移
displacement divelopment,顶替展开法
displacement pickup,位移传感器
displacement transducer[sensor],位移传感器
displacement,velocity and acceleration shock response spectrum, 位移、速度和加速度冲击响应谱
display attribute,显示属性
display console,显示控制台
display device,显示器；显示设备
display element,显示元件
display unit,显示单元
dissipation constant,耗散常数
dissipation power,耗散功率
dissolved oxygen analyzer,溶解氧分析器
dissolved oxygen analyzer for seawater,海水溶解氧测定仪
dissolved oxygen of seawater,海水中的溶解氧
distance amplitude compensation,距离振幅补偿
distance amplitude curve,距离振幅曲线
distance constant,距离常数
distance factor,距离系数
distance marder,距离刻度
distance meter,测距仪
distance of centre of gravity,重心距
distorted peak,畸峰
distortion,失真；畸变
distributed computer-control SDAS,分布式遥测型数字地震仪
distributed computer control system, 分散型计算机控制系统；分布式计算机控制系统
distributed control,分散控制；分布控制
distributed control system,分散型控制系统；分布式控制系统
distributed data base,分布式数据库
distributed intelligence,分散智能 distributed networkm,分布式网络
distributed parameter control system,分散[分布]能数控制系统
distributed telemetry SDAS,分布式遥测型数字地震仪
distribution temperature,分布温度
disturbance,扰动
dither,颤振
dithering,颤动
diverging three way valve,三通分流阀
diverter,换向器
diving bell,潜水钟
document．文件；文献
document．tion,文件管理；文件集
domestic package,内销包装
dominant frequency,优势频率；主频率
Doppler current meter,多普勒海流计
Doppler effect,多普勒效应
Doppler flowmeter,多普勒流量计
Doppler radar,多普勒雷达
Doppler sonar,多普勒声纳
dose,剂量
dose rate,剂量率
dose rate meter,剂量率计
dosementer,剂量计
dot matrix printer,点阵式打印机
dot printer,点阵印刷机；点阵打印机
dotted line recorder,断续线记录仪
dotting time,打点时间
double acting positioner,双作用定位器
double-beam mass spectrometer,双束质谱计
double beam spectrum radiator,双光束光谱福射计
double bounce technique,二次反射法
double collectors,双接收器
double-cone viscometer,双锥粘度计
double crystal probe,双振子探头
double-dry calorimeter,双干式热量计
double-focusing mass spectroscope,双聚焦质谱仪器
double-focus X-ray tube,双焦点X射线管
double focusing,双聚焦
double focusing analyzer,双聚焦分析器
double focusing at all masses,全质量双聚焦
double-image tacheometer,双像速测仪
double inlet system,双进样系统
double insulation,双重绝缘
double-junction SQUID magnetometer,双结磁强计
double-magnification imaging,双放大倍率成象法
double pan balance,双盘天平
double-pass internal reflection element,双通内反射元件
double-path rato thermometer,双通道比色温度计
double-polarity method for calibrating thermocouple,热电偶双级检定法
double probe technique,热电偶双极检定法
double probe technique,双探头法
double tube mercury manometer,双管水银压力表
dulble tube thermometer,套管温度表
dulble vibration amplitude,双振幅
down time,停机时间
downhole instrument,下井仪器
downwar(total)radiation,向下（全）辐射
downward terrestrial radiantion,大气向下辐射
draft standard,标准草案
drag of towed vehicale,拖曳体阻力
drain boles,排泄孔
draught drying cabinet,电热鼓风干燥箱
drawing force,拉力
dredge,拖曳式采样器
drift,漂移
drift bottle,漂流瓶
drift card,漂流卡
drift plate drogue,漂流板
drifting buoy,漂流浮标
driving chart[paper]swaying,走纸偏差
driving device,驱动装置
driving torque,驱动力矩
drooping characteristic,下降特性
drop size meter,滴谱仪
drop test,跌落试验
dropping mercury electrode,滴汞电极
dropsonde,下投式探空仪
drosometer,露量表；露量器
drum recorder,鼓形记录仪
dry air,干空气
dry bulb,干球
dry gas meter,干式气体表
dry heat test,干热试验
dry-bulb thermometer,干球温度表
drying cabinet on forecd convection,电热鼓风干燥箱
drying oven,干燥箱
DSC curve,差示扫描量热曲线
DSC meter,差示扫描量热仪
DSC-TC,差示扫描量热仪/热天平
DTA range,DTA,范围；差热分析范围
dual computer system,双并列计算机系统；复式计算机系统
cual-flame ionization detector,双火焰离子化检测器
dual purpose voltage transformer,双重用途电压互感器
duet,对（两个换能器的一种布置方式）
dump,转储
duoplasmatron ion source,双等离子体离子源
duplex(pressure)gauge,双工[双针]压力表
duplex transmission,双工传输
duplexed computer system,双计算机系统
durabilitym,耐久性 duration,持续时间
duration of cycle,周期时间
duration of load,负荷保持时间
dust analyzer,尘量分析仪
dust counter,计尘器
dustproof instrument,防尘式仪器仪表
dustproof packaging,防尘包装
dust-proof solenoid valve,防尘型电磁阀
dwell time,停顿时间
dye marks,染色测流法
dye-penetrant testing method,着色渗透探伤法
dynamic accumulation error,动态累计误差
dynamic calibrator,动态校准器
dynamic characteristic calibrater,动态特性校准仪
dynamic characteristics,动态特性
dynamic deviation,动态偏差
dynamic display image,动态显示图象
dynamic error,动态误差
dynamic error coefficient,动态误差系数
dynamic gauging,动态容积测量法
dynamic load,动负荷
dynamic mass spectrometer instruments,动态质谱仪器
dynamic measurement,动态测量
dynamic microphone,电动传声器
dynamic model,动态模型
dynamic pressure,动压
dynamic pressure of fluid element,流体单元动压
dynamic pressure transducer[sensor],动态压力传感器
dynamic range,动态范围
dynamix range of microphone,传声器动态范围
dynamic resolution,动态分辨力
dynamic response,动态响应
dynamic SIMS,动态二次离子质谱法
dynamic standard strain device,动态标准应变装置
dynamic stiffness,动刚度
dynamic stiffnesss of the moving element suspension,运动部件悬挂动刚度
dynamic stiffenss ratio,动刚度比
dynamic storage allocation,动态存储分配
dynamic strain,动应变
dynamic strain indicator,动态应变仪
dynamic thermomechanical analysis,动态热机械分析
dynamic thermomechanical analysis apparatus,动态热机械分析仪
dynamic thermomechanometry,动态热机械法
dynamic(two-plane)balancing,动（双面）平衡
dynamic(two-plane)balancing machine,动（双面）平衡机 dynamic unbalance,动态不平衡
dynamic vane bias,风向标的动力偏幅
dynamic viscosity,动力粘度
dynamic water tank,动水槽
dynamic wieghing method,动态称重法
dynamometric system,测力系统（本文由电子论坛网友
醉龙城提供）
