39 氧化釔(yttrium oxide) 被用於加強牙科用陶瓷的強度,屬於下列何種加強原理?
(A)結晶加強(crystalline reinforcement)
(B)化學加強(chemical strengthening)
(C)應力導致變性(stress-induced transformation)
(D)避免應力腐蝕(prevention of stress corrosion)
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統計: A(80), B(34), C(99), D(9), E(0) #900122
統計: A(80), B(34), C(99), D(9), E(0) #900122