30.原子排列中的差排(dislocation)提供了金屬的何種性質?
(A)脆性(brittleness)
(B)延性(ductility)
(C)導電性(electrical conductivity)
(D)導熱性(thermal conductivity)
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統計: A(52), B(670), C(32), D(7), E(0) #1510498
統計: A(52), B(670), C(32), D(7), E(0) #1510498