Keyboard with buttons marked with different colorsKeyboard with buttons marked with different colors
A plane taking off against the background of a smoking houseA plane taking off against the background of a smoking house
Futuristic map of the earth's surface in green lightFuturistic map of the earth's surface in green light
Совокупность процессов обработки или переработки материалов в определённой отрасли производства, а также научное описание способов производства.