Photo of a military aircraft with vertical takeoff at the airfieldPhoto of a military aircraft with vertical takeoff at the airfield
A bright white-orange helicopter hovered in the airA bright white-orange helicopter hovered in the air
Steel can be fine until it is made into a bullet for a weaponSteel can be fine until it is made into a bullet for a weapon
Совокупность процессов обработки или переработки материалов в определённой отрасли производства, а также научное описание способов производства.