银行卡调查报告:合成材料的特点是什么
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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