一种定义
四种语言
Brittle materials break after minimal plastic deformation in the form of a brittle fracture (also called a separation fracture).
Laser cutting is a thermal separation process used on plate or three-dimensional materials (sheet material, tubes).
Sawing is a material-removal and separation process in which a toothed tool (saw) is used to cut or notch solid workpieces with a narrow cut width.