- semiautomatic points switching
- nRAIL cambio de agujas semi-automático m
English-Spanish technical dictionary. - London, © Routledge. 1997.
English-Spanish technical dictionary. - London, © Routledge. 1997.
Telegraph key — A straight key style of telegraph key J38 World War II era U.S. military model … Wikipedia
photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… … Universalium