- dehumidifying battery
- dehumidifying equipment
- dehumidifying grid
- dehydrant
- dehydrating apparatus
- dehydration cycle
- delay equalizer
- delayed opening
- demarcation
- demarcation line
- dematerialization
- demodulation
- demolition bomb
- demultiplexing
- departure
- depletion region
- derived quantity
- desalination freezing
- descendant
- design conditions
- design load
- design temperature
- detachment
- detecting element
- detector
- determinism
- deuterium labeled
- deuton
- device
- dewaxing
- dextrorotation
- dial
- demonstration
- demultiplexer
- density control
- density spectrum
- denuder
- deoxidation
- dephased
- depolarization current
- describe
- desiccant charging
- desired temperature
- desk
- deterministic signal
- developer
- dialyser
- diamagnetic susceptibility
- diametral connection
- diametral voltage
- diamond type
- diaphragm chamber
- diaphragm value
- diatomic gas
- dichroic mirror
- dichromatism
- die
- die bond
- dielectric absorption
- dielectric circuit
- dielectric crystal
- dielectric heating
- dielectric leakage
- dielectric lens
- dielectric loss
- dielectric property
- dielectric shielding
- dielectric soak
- dielectric strength
- dielectric substance
- dielectric wire
- dielene
- difference frequency
- differential gap
- differential measurement
- differential motor
- depth gauge
- derivative unit
- describing function
- desiccation effect
- desiccation ratio
- design humidity
- destructive test
- desuperheating zone
- detonation wave
- development
- deviation alarm
- dextrorse
- diagnosis device
- diagnostic technology
- diagonal element
- diagram scanner
- dial leg
- dial tone
- diaphragm
- diaphragm drive
- diapositive
- diascope
- diathermanous envelope
- diathermy