Glossary D
Deutsch: Destillation / Español: Destilación / Português: Destilação / Français: Distillation / Italiano: Distillazione /
Distillation refers to the first step in the refining process. During distillation, crude oil is heated in the base of a distillation tower.
Deutsch: Gerät / Español: Dispositivo / Português: Dispositivo / Français: Dispositif / Italiano: Dispositivo /
Device can be taken to mean:
1. An electrical device designed to carry power;
Digital command control has something to do with the method of controlling multiple trains and accessories using digital communications packets to send commands.
Diffraction is identified as the phenomenon of light that occurs when light passing through a narrow aperture bends when it passes around an edge.
Differential gear is defined as a bevel gear that permits rotation of two shafts at different speeds.