ZrO2中掺入Y2O3使产生氧离子空位和建立全稳定立方相结构。ZrO2固体电解质是离子导电体，它是通过晶格内的氧离子空位来实现导电的，锆的导电金属氧化物的加入使得在ZrO2晶格中产生了大量的氧离子空位。They may hide a coin in one of the dumplings. The person who finds the coin will likely have a good fortune in the New Year.Chinese dumpling is also popular in other chinese holidays or festivals,so it is part of the chinese culture or traditional.