What's true about the fracture is that ( ).
选项:
A:Brittle material fracture fibrous.;
B:Ductile materials have no obvious plastic deformation before fracture.;
C:The fracture of the ductile material is crystalline and shiny.;
D:The fracture of brittle materials is crystalline or porcelain.
发布时间:2024-06-13 16:26:10