detonationdevelopmentdeviationdewdew pointdgdialdialyzerdiamdiameterdiaphragmdiaphragm valvedifferential pressurediffusediffuserdiffusiondilutedilutiondimensiondipdippingdipstickdirect currentdirectiondiscdischargedissolvedistancedistance measueing equipmentdistildistillatedistillationdistillation apparatusdistributedistribution boxdistribution panneldistrictdistrict regulator stationdivisiondldmdmedouble actingdouble rootdouble stagedowncomerdozdozendraftdraft gauge