Kovarik RE, Ergle JW. Fracture toughness of posterior composite resinsfabricated by incremental layering[J]. J Prosthet Dent ,1993,69:557.是什么意思_Kovarik RE, Ergle JW. Fracture toughness of posterior composite resinsfabricated by incremental layering[J]. J Prosthet Dent ,1993,69:557.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句