BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 33 41.2%
2 Korea, Republic of 13 16.2%
3 Germany 11 13.8%
4 China 11 13.8%
5 France 5 6.2%
6 Hong Kong 2 2.5%
7 Japan 2 2.5%
8 Switzerland 1 1.2%
9 Australia 1 1.2%
10 Canada 1 1.2%