decentralized model,分散模型

decentralized robust control,分散魯棒控制

decentralized stochastic control,分散隨机控制

decision analysis,決策分析

decision model,決策模

decision program,決策程序

decision space,決策空間

decision support system,決策支持系統

decision table,判定表

decision theory，決策（理）論

decision tree,決策樹

decrement ratio,減幅比

deep sea instrument capsule,深海儀器艙

defect,缺陷

defining fixed point,定義固定點

definitionm,清晰度

deflecting torque,偏轉力矩

deflection,撓度

deflection method,偏位法

deflection period,擺動周期

defocus contrast,离焦襯度

dehumidification,除濕

dehumidifier,除濕器

delay distance,滯后距离

delay time,滯后時間

delayed echo,遲到反射波

delayed telemetry,延時遙測

delimiter bit,定界位

delimiter byte,定界定節

delta-T,時間差；時差

delta-T timing unit,時差計時單元

demagnetization,退磁

demagnetizer,退磁机；退磁裝置

demagnetizing coil,消磁線圈

demand,請求

demand handling,請求處理

demand message,請求報文

democratic system,民主系統

demodulation,解調

demodulator,解調器

densitometer,密度計；黑度計

density,密度

density correction,密度修正

density logger,密度測井儀

density meter(of ionizing radiaiton),（電离輻射）密度計

density of heat flow,熱流密度

density of snow,積雪密度

density(photographic),（照相的）黑度

density transducer[sensor],密度傳感器

depressor,沉降器

depth bellows,深波紋管

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,前后掃查

depth sounding,測深

derivative absorption spectrum,導數吸收光譜

derivative action;D-action,微分作用；D-作用

derivative action coefficient,微分作用系數

derivative action gain,微分作用增益

derivative action time,微分作用時間

derivative differential thermal analysis,導數差示熱分析

derivative differential thermal curve,導數差示熱曲線

derivative dilatometry,導數膨脹法

derivative feedback,微分反饋

derivative thermogravimetric curve,導數熱重曲線

derivative thermogravimetry,導數熱重法

derivative unit,微分器

derived unit(of measurement),導出（測量）單位

describing function,描述函數

design automation,設計自動化

design constant,設計常數

design distance,設計距离

design of simulation dxperiment,仿真實驗設計

designed immersion depth,設計浸入深度

desired value,預期值

desorption chemical ionization(DCI),解吸化學電离

destination,目的站

detectability,可檢測性；能檢測性；檢測能力

detectability(chromatographic),（色譜）檢測限

detecting instrument,檢出器；檢測元件；檢波器

developer,顯示劑

development tank,展開罐

deviation,偏差

deviation alarm sensor,偏差報警檢測器

deviation from lonearity,偏离線性度

deviation of the e.m.f.(with respect to the certified value), 電動勢的偏差值（相對于檢定值)

device,裝置

Device Net，Device Net 總線；裝置网

dew cell,露池

dew-point,露點

dew-point hygrograph,露點計

dew point hygrometer,露點濕度計；露點濕度表

dew point temperature,露點溫度

dew point transducer[sensor],露點傳感器

dewgauge,露量表；露量器