目的探讨改善前牙二氧化锆联冠瓷三角美学效果的方法。
Objective to discuss the methods of repairing the anterior tooth "porcelain triangle" with ZrO2-league-crown.
围隔实验研究了褶纹冠蚌、三角帆蚌与河蚬等三种淡水贝类对水环境的调控作用。
Effects of Cristaria plicata, Hyriopsis cumingii and Corbicula fluminea on restoring aquatic environment were studied.
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