两种不同氧化钇含量的牙科氧化锆瓷与牙釉质的摩擦磨损性能
량충불동양화을함량적아과양화고자여아유질적마찰마손성능
Friction and wear behaviors of two kind of dental zirconia ceramics with different level of Y2O3 against enamel
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