御前四宝字幕:合成材料的特点是什么
来源:百度文库 编辑:中科新闻网 时间:2024/05/12 15:44:56
a.high strength-to- weight and stiffness-to-weight ratios
b.high electrical conductivity
c.good fatigue properties and toughness
d.anisotropic properties
e.good ductility
多选
b.high electrical conductivity
c.good fatigue properties and toughness
d.anisotropic properties
e.good ductility
多选
a.high strength-to- weight and stiffness-to-weight ratios
a
a